diff --git a/test/torch/__init__.py b/test/torch/__init__.py
index a78ed870d9be2e5912ab08c243239a40d7167194..1a713f0eb1fd5423dd3deafd14f69df479f6e27e 100644
--- a/test/torch/__init__.py
+++ b/test/torch/__init__.py
@@ -1,2 +1,2 @@
-from .test_funcs import TestTensorFuncs
-from .test_treetensor import TestTensorTreetensor
+from .test_funcs import TestTorchFuncs
+from .test_tensor import TestTorchTensor
diff --git a/test/torch/test_funcs.py b/test/torch/test_funcs.py
index 23a2a4ec485f0b96c4c5182f59ace0b73cc7d69d..ec7c35712898be5e5376059ff5f2f11fa5e3bf67 100644
--- a/test/torch/test_funcs.py
+++ b/test/torch/test_funcs.py
@@ -7,7 +7,34 @@ import treetensor.torch as ttorch
 
 # noinspection DuplicatedCode
 @pytest.mark.unittest
-class TestTensorFuncs:
+class TestTorchFuncs:
+    def test_tensor(self):
+        t1 = ttorch.tensor(True)
+        assert isinstance(t1, torch.Tensor)
+        assert t1
+
+        t2 = ttorch.tensor([[1, 2, 3], [4, 5, 6]])
+        assert isinstance(t2, torch.Tensor)
+        assert (t2 == torch.tensor([[1, 2, 3], [4, 5, 6]])).all()
+
+        t3 = ttorch.tensor({
+            'a': [1, 2],
+            'b': [[3, 4], [5, 6.2]],
+            'x': {
+                'c': True,
+                'd': [False, True],
+            }
+        })
+        assert isinstance(t3, ttorch.Tensor)
+        assert (t3 == ttorch.Tensor({
+            'a': torch.tensor([1, 2]),
+            'b': torch.tensor([[3, 4], [5, 6.2]]),
+            'x': {
+                'c': torch.tensor(True),
+                'd': torch.tensor([False, True]),
+            }
+        })).all()
+
     def test_zeros(self):
         assert ttorch.all(ttorch.zeros((2, 3)) == torch.zeros(2, 3))
         assert ttorch.all(ttorch.zeros(TreeValue({
@@ -16,7 +43,7 @@ class TestTensorFuncs:
             'x': {
                 'c': (2, 3, 4),
             }
-        })) == ttorch.TreeTensor({
+        })) == ttorch.Tensor({
             'a': torch.zeros(2, 3),
             'b': torch.zeros(5, 6),
             'x': {
@@ -30,14 +57,14 @@ class TestTensorFuncs:
             torch.tensor([[0, 0, 0], [0, 0, 0]]),
         )
         assert ttorch.all(
-            ttorch.zeros_like(ttorch.TreeTensor({
+            ttorch.zeros_like(({
                 'a': torch.tensor([[1, 2, 3], [4, 5, 6]]),
                 'b': torch.tensor([1, 2, 3, 4]),
                 'x': {
                     'c': torch.tensor([5, 6, 7]),
                     'd': torch.tensor([[[8, 9]]]),
                 }
-            })) == ttorch.TreeTensor({
+            })) == ttorch.Tensor({
                 'a': torch.tensor([[0, 0, 0], [0, 0, 0]]),
                 'b': torch.tensor([0, 0, 0, 0]),
                 'x': {
@@ -55,7 +82,7 @@ class TestTensorFuncs:
             'x': {
                 'c': (2, 3, 4),
             }
-        })) == ttorch.TreeTensor({
+        })) == ttorch.Tensor({
             'a': torch.ones(2, 3),
             'b': torch.ones(5, 6),
             'x': {
@@ -69,14 +96,14 @@ class TestTensorFuncs:
             torch.tensor([[1, 1, 1], [1, 1, 1]])
         )
         assert ttorch.all(
-            ttorch.ones_like(ttorch.TreeTensor({
+            ttorch.ones_like(({
                 'a': torch.tensor([[1, 2, 3], [4, 5, 6]]),
                 'b': torch.tensor([1, 2, 3, 4]),
                 'x': {
                     'c': torch.tensor([5, 6, 7]),
                     'd': torch.tensor([[[8, 9]]]),
                 }
-            })) == ttorch.TreeTensor({
+            })) == ttorch.Tensor({
                 'a': torch.tensor([[1, 1, 1], [1, 1, 1]]),
                 'b': torch.tensor([1, 1, 1, 1]),
                 'x': {
@@ -99,7 +126,7 @@ class TestTensorFuncs:
                 'c': (2, 3, 4),
             }
         }))
-        assert _target.shape == ttorch.TreeSize({
+        assert _target.shape == ttorch.Size({
             'a': torch.Size([2, 3]),
             'b': torch.Size([5, 6]),
             'x': {
@@ -113,7 +140,7 @@ class TestTensorFuncs:
         assert 0.98 <= _target.view(60000).std().tolist() <= 1.02
         assert _target.shape == torch.Size([200, 300])
 
-        _target = ttorch.randn_like(ttorch.TreeTensor({
+        _target = ttorch.randn_like(({
             'a': torch.tensor([[1, 2, 3], [4, 5, 6]], dtype=torch.float32),
             'b': torch.tensor([1, 2, 3, 4], dtype=torch.float32),
             'x': {
@@ -121,7 +148,7 @@ class TestTensorFuncs:
                 'd': torch.tensor([[[8, 9]]], dtype=torch.float32),
             }
         }))
-        assert _target.shape == ttorch.TreeSize({
+        assert _target.shape == ttorch.Size({
             'a': torch.Size([2, 3]),
             'b': torch.Size([4]),
             'x': {
@@ -140,7 +167,7 @@ class TestTensorFuncs:
         }))
         assert ttorch.all(_target < 10)
         assert ttorch.all(-10 <= _target)
-        assert _target.shape == ttorch.TreeSize({
+        assert _target.shape == ttorch.Size({
             'a': torch.Size([2, 3]),
             'b': torch.Size([5, 6]),
             'x': {
@@ -157,7 +184,7 @@ class TestTensorFuncs:
         }))
         assert ttorch.all(_target < 10)
         assert ttorch.all(0 <= _target)
-        assert _target.shape == ttorch.TreeSize({
+        assert _target.shape == ttorch.Size({
             'a': torch.Size([2, 3]),
             'b': torch.Size([5, 6]),
             'x': {
@@ -166,7 +193,7 @@ class TestTensorFuncs:
         })
 
     def test_randint_like(self):
-        _target = ttorch.randint_like(ttorch.TreeTensor({
+        _target = ttorch.randint_like(({
             'a': torch.tensor([[1, 2, 3], [4, 5, 6]]),
             'b': torch.tensor([1, 2, 3, 4]),
             'x': {
@@ -176,7 +203,7 @@ class TestTensorFuncs:
         }), -10, 10)
         assert ttorch.all(_target < 10)
         assert ttorch.all(-10 <= _target)
-        assert _target.shape == ttorch.TreeSize({
+        assert _target.shape == ttorch.Size({
             'a': torch.Size([2, 3]),
             'b': torch.Size([4]),
             'x': {
@@ -185,7 +212,7 @@ class TestTensorFuncs:
             }
         })
 
-        _target = ttorch.randint_like(ttorch.TreeTensor({
+        _target = ttorch.randint_like(({
             'a': torch.tensor([[1, 2, 3], [4, 5, 6]]),
             'b': torch.tensor([1, 2, 3, 4]),
             'x': {
@@ -195,7 +222,7 @@ class TestTensorFuncs:
         }), 10)
         assert ttorch.all(_target < 10)
         assert ttorch.all(0 <= _target)
-        assert _target.shape == ttorch.TreeSize({
+        assert _target.shape == ttorch.Size({
             'a': torch.Size([2, 3]),
             'b': torch.Size([4]),
             'x': {
@@ -213,7 +240,7 @@ class TestTensorFuncs:
             }
         }), 233)
         assert ttorch.all(_target == 233)
-        assert _target.shape == ttorch.TreeSize({
+        assert _target.shape == ttorch.Size({
             'a': torch.Size([2, 3]),
             'b': torch.Size([5, 6]),
             'x': {
@@ -222,7 +249,7 @@ class TestTensorFuncs:
         })
 
     def test_full_like(self):
-        _target = ttorch.full_like(ttorch.TreeTensor({
+        _target = ttorch.full_like(({
             'a': torch.tensor([[1, 2, 3], [4, 5, 6]]),
             'b': torch.tensor([1, 2, 3, 4]),
             'x': {
@@ -231,7 +258,7 @@ class TestTensorFuncs:
             }
         }), 233)
         assert ttorch.all(_target == 233)
-        assert _target.shape == ttorch.TreeSize({
+        assert _target.shape == ttorch.Size({
             'a': torch.Size([2, 3]),
             'b': torch.Size([4]),
             'x': {
@@ -248,7 +275,7 @@ class TestTensorFuncs:
                 'c': (2, 3, 4),
             }
         }))
-        assert _target.shape == ttorch.TreeSize({
+        assert _target.shape == ttorch.Size({
             'a': torch.Size([2, 3]),
             'b': torch.Size([5, 6]),
             'x': {
@@ -257,7 +284,7 @@ class TestTensorFuncs:
         })
 
     def test_empty_like(self):
-        _target = ttorch.empty_like(ttorch.TreeTensor({
+        _target = ttorch.empty_like(({
             'a': torch.tensor([[1, 2, 3], [4, 5, 6]]),
             'b': torch.tensor([1, 2, 3, 4]),
             'x': {
@@ -265,7 +292,7 @@ class TestTensorFuncs:
                 'd': torch.tensor([[[8, 9]]]),
             }
         }))
-        assert _target.shape == ttorch.TreeSize({
+        assert _target.shape == ttorch.Size({
             'a': torch.Size([2, 3]),
             'b': torch.Size([4]),
             'x': {
@@ -290,7 +317,7 @@ class TestTensorFuncs:
         assert r3 == torch.tensor(False)
         assert not r3
 
-        r4 = ttorch.all(ttorch.TreeTensor({
+        r4 = ttorch.all(({
             'a': torch.tensor([True, True, True]),
             'b': torch.tensor([True, True, True]),
         })).all()
@@ -298,7 +325,7 @@ class TestTensorFuncs:
         assert r4 == torch.tensor(True)
         assert r4
 
-        r5 = ttorch.all(ttorch.TreeTensor({
+        r5 = ttorch.all(({
             'a': torch.tensor([True, True, True]),
             'b': torch.tensor([True, True, False]),
         })).all()
@@ -306,7 +333,7 @@ class TestTensorFuncs:
         assert r5 == torch.tensor(False)
         assert not r5
 
-        r6 = ttorch.all(ttorch.TreeTensor({
+        r6 = ttorch.all(({
             'a': torch.tensor([False, False, False]),
             'b': torch.tensor([False, False, False]),
         })).all()
@@ -330,7 +357,7 @@ class TestTensorFuncs:
         assert r3 == torch.tensor(False)
         assert not r3
 
-        r4 = ttorch.any(ttorch.TreeTensor({
+        r4 = ttorch.any(({
             'a': torch.tensor([True, True, True]),
             'b': torch.tensor([True, True, True]),
         })).all()
@@ -338,7 +365,7 @@ class TestTensorFuncs:
         assert r4 == torch.tensor(True)
         assert r4
 
-        r5 = ttorch.any(ttorch.TreeTensor({
+        r5 = ttorch.any(({
             'a': torch.tensor([True, True, True]),
             'b': torch.tensor([True, True, False]),
         })).all()
@@ -346,7 +373,7 @@ class TestTensorFuncs:
         assert r5 == torch.tensor(True)
         assert r5
 
-        r6 = ttorch.any(ttorch.TreeTensor({
+        r6 = ttorch.any(({
             'a': torch.tensor([False, False, False]),
             'b': torch.tensor([False, False, False]),
         })).all()
@@ -360,17 +387,17 @@ class TestTensorFuncs:
         assert ttorch.eq(torch.tensor([1, 1, 1]), 1).all()
         assert not ttorch.eq(torch.tensor([1, 1, 2]), 1).all()
 
-        assert ttorch.eq(ttorch.TreeTensor({
+        assert ttorch.eq(({
             'a': torch.tensor([1, 2, 3]),
             'b': torch.tensor([4, 5, 6]),
-        }), ttorch.TreeTensor({
+        }), ({
             'a': torch.tensor([1, 2, 3]),
             'b': torch.tensor([4, 5, 6]),
         })).all()
-        assert not ttorch.eq(ttorch.TreeTensor({
+        assert not ttorch.eq(({
             'a': torch.tensor([1, 2, 3]),
             'b': torch.tensor([4, 5, 6]),
-        }), ttorch.TreeTensor({
+        }), ({
             'a': torch.tensor([1, 2, 3]),
             'b': torch.tensor([4, 5, 5]),
         })).all()
@@ -384,20 +411,20 @@ class TestTensorFuncs:
         assert isinstance(p2, bool)
         assert not p2
 
-        p3 = ttorch.equal(ttorch.TreeTensor({
+        p3 = ttorch.equal(({
             'a': torch.tensor([1, 2, 3]),
             'b': torch.tensor([4, 5, 6]),
-        }), ttorch.TreeTensor({
+        }), ({
             'a': torch.tensor([1, 2, 3]),
             'b': torch.tensor([4, 5, 6]),
         }))
         assert isinstance(p3, bool)
         assert p3
 
-        p4 = ttorch.equal(ttorch.TreeTensor({
+        p4 = ttorch.equal(({
             'a': torch.tensor([1, 2, 3]),
             'b': torch.tensor([4, 5, 6]),
-        }), ttorch.TreeTensor({
+        }), ({
             'a': torch.tensor([1, 2, 3]),
             'b': torch.tensor([4, 5, 5]),
         }))
diff --git a/test/torch/test_treetensor.py b/test/torch/test_tensor.py
similarity index 90%
rename from test/torch/test_treetensor.py
rename to test/torch/test_tensor.py
index ed436370b85b0a6abb0290b5959701e1ba8efd5d..18360afe4b0af97ac98542029e502232d7e3e9b8 100644
--- a/test/torch/test_treetensor.py
+++ b/test/torch/test_tensor.py
@@ -6,12 +6,12 @@ from treevalue import func_treelize
 import treetensor.numpy as tnp
 import treetensor.torch as ttorch
 
-_all_is = func_treelize(return_type=ttorch.TreeTensor)(lambda x, y: x is y)
+_all_is = func_treelize(return_type=ttorch.Tensor)(lambda x, y: x is y)
 
 
 @pytest.mark.unittest
-class TestTensorTreetensor:
-    _DEMO_1 = ttorch.TreeTensor({
+class TestTorchTensor:
+    _DEMO_1 = ttorch.Tensor({
         'a': torch.tensor([[1, 2, 3], [4, 5, 6]]),
         'b': torch.tensor([[1, 2], [5, 6]]),
         'x': {
@@ -20,7 +20,7 @@ class TestTensorTreetensor:
         }
     })
 
-    _DEMO_2 = ttorch.TreeTensor({
+    _DEMO_2 = ttorch.Tensor({
         'a': torch.tensor([[1, 2, 3], [4, 5, 6]]),
         'b': torch.tensor([[1, 2], [5, 60]]),
         'x': {
@@ -47,7 +47,7 @@ class TestTensorTreetensor:
         assert _all_is(self._DEMO_1.cpu(), self._DEMO_1).reduce(lambda **kws: all(kws.values()))
 
     def test_to(self):
-        assert ttorch.all(self._DEMO_1.to(torch.float32) == ttorch.TreeTensor({
+        assert ttorch.all(self._DEMO_1.to(torch.float32) == ttorch.Tensor({
             'a': torch.tensor([[1, 2, 3], [4, 5, 6]], dtype=torch.float32),
             'b': torch.tensor([[1, 2], [5, 6]], dtype=torch.float32),
             'x': {
diff --git a/treetensor/__init__.py b/treetensor/__init__.py
index 85e9a7cad40b27a4e3ff0a1d58037bc7356647c2..3b27b659ce5ce47c4a42033529205285ecbbce96 100644
--- a/treetensor/__init__.py
+++ b/treetensor/__init__.py
@@ -1,3 +1,3 @@
 from .common import TreeObject
 from .numpy import TreeNumpy
-from .torch import TreeTensor
+from .torch import Tensor
diff --git a/treetensor/torch/funcs.py b/treetensor/torch/funcs.py
index 6ca9399af3790d60a5c561e8aeedd9cec52b1280..de688e73717bfd7b877ff86b6c55ef107d14295f 100644
--- a/treetensor/torch/funcs.py
+++ b/treetensor/torch/funcs.py
@@ -1,11 +1,13 @@
 import builtins
 
 import torch
+from treevalue import TreeValue
 from treevalue import func_treelize as original_func_treelize
+from treevalue.utils import post_process
 
-from .tensor import TreeTensor, tireduce
+from .tensor import Tensor, tireduce
 from ..common import TreeObject, ireduce
-from ..utils import replaceable_partial, doc_from
+from ..utils import replaceable_partial, doc_from, args_mapping
 
 __all__ = [
     'zeros', 'zeros_like',
@@ -16,9 +18,13 @@ __all__ = [
     'empty', 'empty_like',
     'all', 'any',
     'eq', 'equal',
+    'tensor',
 ]
 
-func_treelize = replaceable_partial(original_func_treelize, return_type=TreeTensor)
+func_treelize = post_process(post_process(args_mapping(
+    lambda i, x: Tensor(x) if isinstance(x, (dict, TreeValue)) else x)))(
+    replaceable_partial(original_func_treelize, return_type=Tensor)
+)
 
 
 @doc_from(torch.zeros)
@@ -102,18 +108,20 @@ def all(input_, *args, **kwargs):
 
     Example::
 
+        >>> import torch
+        >>> import treetensor.torch as ttorch
         >>> all(torch.tensor([True, True]))  # the same as torch.all
         torch.tensor(True)
 
-        >>> all(TreeTensor({
-        >>>     'a': torch.tensor([True, True]),
-        >>>     'b': torch.tensor([True, True]),
+        >>> all(ttorch.tensor({
+        >>>     'a': [True, True],
+        >>>     'b': [True, True],
         >>> }))
         torch.tensor(True)
 
-        >>> all(TreeTensor({
-        >>>     'a': torch.tensor([True, True]),
-        >>>     'b': torch.tensor([True, False]),
+        >>> all(Tensor({
+        >>>     'a': [True, True],
+        >>>     'b': [True, False],
         >>> }))
         torch.tensor(False)
 
@@ -139,3 +147,30 @@ def eq(input_, other, *args, **kwargs):
 @func_treelize()
 def equal(input_, other, *args, **kwargs):
     return torch.equal(input_, other, *args, **kwargs)
+
+
+@doc_from(torch.tensor)
+@func_treelize()
+def tensor(*args, **kwargs):
+    """
+    In ``treetensor``, you can create a tree tensor with simple data structure.
+
+    Examples::
+
+        >>> import torch
+        >>> import treetensor.torch as ttorch
+        >>> ttorch.tensor(True)  # the same as torch.tensor(True)
+        torch.tensor(True)
+
+        >>> ttorch.tensor([1, 2, 3])  # the same as torch.tensor([1, 2, 3])
+        torch.tensor([1, 2, 3])
+
+        >>> ttorch.tensor({'a': 1, 'b': [1, 2, 3], 'c': [[True, False], [False, True]]})
+        ttorch.Tensor({
+            'a': torch.tensor(1),
+            'b': torch.tensor([1, 2, 3]),
+            'c': torch.tensor([[True, False], [False, True]]),
+        })
+
+    """
+    return torch.tensor(*args, **kwargs)
diff --git a/treetensor/torch/size.py b/treetensor/torch/size.py
index 0aa014661951142d375802df5660fdb04396c7eb..b5cb3f1dd7bf8523bbbeaff24ece6a4bfe1bcd75 100644
--- a/treetensor/torch/size.py
+++ b/treetensor/torch/size.py
@@ -7,12 +7,12 @@ from ..utils import replaceable_partial
 func_treelize = replaceable_partial(original_func_treelize)
 
 __all__ = [
-    'TreeSize'
+    'Size'
 ]
 
 
 # noinspection PyTypeChecker
-class TreeSize(TreeObject):
+class Size(TreeObject):
     @func_treelize(return_type=TreeObject)
     def numel(self: torch.Size) -> TreeObject:
         return self.numel()
diff --git a/treetensor/torch/tensor.py b/treetensor/torch/tensor.py
index 2a760dcfaf246a81ded7786ce870fbf28e10c1de..aadb345103d88219a9de1d4eca5772e6a3164c73 100644
--- a/treetensor/torch/tensor.py
+++ b/treetensor/torch/tensor.py
@@ -3,13 +3,13 @@ import torch
 from treevalue import method_treelize
 from treevalue.utils import pre_process
 
-from .size import TreeSize
+from .size import Size
 from ..common import TreeObject, TreeData, ireduce
 from ..numpy import TreeNumpy
 from ..utils import inherit_names, current_names, doc_from
 
 __all__ = [
-    'TreeTensor'
+    'Tensor'
 ]
 
 _reduce_tensor_wrap = pre_process(lambda it: ((torch.tensor([*it]),), {}))
@@ -19,7 +19,7 @@ tireduce = pre_process(lambda rfunc: ((_reduce_tensor_wrap(rfunc),), {}))(ireduc
 # noinspection PyTypeChecker,PyShadowingBuiltins,PyArgumentList
 @current_names()
 @inherit_names(TreeData)
-class TreeTensor(TreeData):
+class Tensor(TreeData):
     @doc_from(torch.Tensor.numpy)
     @method_treelize(return_type=TreeNumpy)
     def numpy(self: torch.Tensor) -> np.ndarray:
@@ -53,7 +53,7 @@ class TreeTensor(TreeData):
 
     @property
     @doc_from(torch.Tensor.shape)
-    @method_treelize(return_type=TreeSize)
+    @method_treelize(return_type=Size)
     def shape(self: torch.Tensor):
         return self.shape
 
diff --git a/treetensor/utils/func.py b/treetensor/utils/func.py
index 61c15f758b6af426e9bbe374068668da67a03cfd..10cce7a0db83d4815a38ca035fac2bfc040cea00 100644
--- a/treetensor/utils/func.py
+++ b/treetensor/utils/func.py
@@ -1,10 +1,29 @@
+from functools import wraps
+from typing import Callable, Union, Any
+
 __all__ = [
     'replaceable_partial',
+    'args_mapping',
 ]
 
 
 def replaceable_partial(func, **kws):
+    @wraps(func)
     def _new_func(*args, **kwargs):
         return func(*args, **{**kws, **kwargs})
 
     return _new_func
+
+
+def args_mapping(mapper: Callable[[Union[int, str], Any], Any]):
+    def _decorator(func):
+        @wraps(func)
+        def _new_func(*args, **kwargs):
+            return func(
+                *(mapper(i, x) for i, x in enumerate(args)),
+                **{k: mapper(k, v) for k, v in kwargs.items()},
+            )
+
+        return _new_func
+
+    return _decorator