diff --git "a/data/1.toolchains\345\210\235\351\230\266/1.GIT\345\205\245\351\227\250/config.json" "b/data/1.toolchains\345\210\235\351\230\266/1.GIT\345\205\245\351\227\250/config.json"
index d6aaccbb632c8d997dd568a36cd437bf005e5b81..792ef9c79401097e928476037bdafbb196cecceb 100644
--- "a/data/1.toolchains\345\210\235\351\230\266/1.GIT\345\205\245\351\227\250/config.json"
+++ "b/data/1.toolchains\345\210\235\351\230\266/1.GIT\345\205\245\351\227\250/config.json"
@@ -1,5 +1,5 @@
 {
   "keywords": [],
-  "node_id": "c-1cf412c0785c4269a2a4cc7634aa101b",
+  "node_id": "tc-ca61bc935c5d40239707de30f68a4444",
   "title": "GIT入门"
 }
\ No newline at end of file
diff --git "a/data/1.toolchains\345\210\235\351\230\266/config.json" "b/data/1.toolchains\345\210\235\351\230\266/config.json"
index 22e35068e43ff193c879b33e24e0099a9e839983..d1b3f42dd5662659b40b5af4a4b9c7d82d5ca4db 100644
--- "a/data/1.toolchains\345\210\235\351\230\266/config.json"
+++ "b/data/1.toolchains\345\210\235\351\230\266/config.json"
@@ -1,5 +1,5 @@
 {
   "keywords": [],
-  "node_id": "c-5995c3ccf1554d1ca4e48da52cf6aed9",
+  "node_id": "tc-e314213fdbfc445285991968b8b886eb",
   "title": "toolchains初阶"
 }
\ No newline at end of file
diff --git "a/data/2.toolchains\344\270\255\351\230\266/config.json" "b/data/2.toolchains\344\270\255\351\230\266/config.json"
index 5c2bc98918b04a1ec0fb07711b6790356083a468..c7ad3c733c0bb9b257283c57b8dc13f49c97a486 100644
--- "a/data/2.toolchains\344\270\255\351\230\266/config.json"
+++ "b/data/2.toolchains\344\270\255\351\230\266/config.json"
@@ -1,5 +1,5 @@
 {
   "keywords": [],
-  "node_id": "c-671b93fb441b44bd86020a6c5ecb689b",
+  "node_id": "tc-e86748361c424ab28f0ed3ea4a56f652",
   "title": "toolchains中阶"
 }
\ No newline at end of file
diff --git "a/data/3.toolchains\351\253\230\351\230\266/config.json" "b/data/3.toolchains\351\253\230\351\230\266/config.json"
index f17c3d7499082748a5b7f8c7c780e1293dcaa9d1..b02b48709e5e4b944c21c9505e8180d10547144b 100644
--- "a/data/3.toolchains\351\253\230\351\230\266/config.json"
+++ "b/data/3.toolchains\351\253\230\351\230\266/config.json"
@@ -1,5 +1,5 @@
 {
   "keywords": [],
-  "node_id": "c-60527be7abb340d39a1d4a4e780b402c",
+  "node_id": "tc-b2bc70f02a614ca7adac587f37f98acb",
   "title": "toolchains高阶"
 }
\ No newline at end of file
diff --git a/data/config.json b/data/config.json
index f201a93fa860a949a28bf8d1c91cdef048e62ae2..4bc9df13470ab72cc55458f9d6e6c1b7aa6ea567 100644
--- a/data/config.json
+++ b/data/config.json
@@ -1,6 +1,6 @@
 {
   "tree_name": "Toolchains",
   "keywords": [],
-  "node_id": "c-9ae45d2c41cd4958a449b8f50a394fcc",
+  "node_id": "tc-6b7817c003af4f2fb8f53367b6ae0bb5",
   "title": "C"
 }
\ No newline at end of file
diff --git a/data/tree.json b/data/tree.json
index 9911e4b8b964e8d5f637f0916c36585b66ed1b19..fc8cb2743618ccb9f6152ba6a53a934fc4eea1f8 100644
--- a/data/tree.json
+++ b/data/tree.json
@@ -1,16 +1,16 @@
 {
   "Toolchains": {
-    "node_id": "c-9ae45d2c41cd4958a449b8f50a394fcc",
+    "node_id": "tc-6b7817c003af4f2fb8f53367b6ae0bb5",
     "keywords": [],
     "children": [
       {
         "toolchains初阶": {
-          "node_id": "c-5995c3ccf1554d1ca4e48da52cf6aed9",
+          "node_id": "tc-e314213fdbfc445285991968b8b886eb",
           "keywords": [],
           "children": [
             {
               "GIT入门": {
-                "node_id": "c-1cf412c0785c4269a2a4cc7634aa101b",
+                "node_id": "tc-ca61bc935c5d40239707de30f68a4444",
                 "keywords": [],
                 "children": []
               }
@@ -20,14 +20,14 @@
       },
       {
         "toolchains中阶": {
-          "node_id": "c-671b93fb441b44bd86020a6c5ecb689b",
+          "node_id": "tc-e86748361c424ab28f0ed3ea4a56f652",
           "keywords": [],
           "children": []
         }
       },
       {
         "toolchains高阶": {
-          "node_id": "c-60527be7abb340d39a1d4a4e780b402c",
+          "node_id": "tc-b2bc70f02a614ca7adac587f37f98acb",
           "keywords": [],
           "children": []
         }
diff --git a/src/tree.py b/src/tree.py
index ba3287e6e837316c3ec263822d6b503df4bff6fd..07fb6574f09ecf571191948d91a9bdefb3da234d 100644
--- a/src/tree.py
+++ b/src/tree.py
@@ -56,7 +56,7 @@ def gen_tree(data_path):
 
     def gen_node_id():
         # return ''.join(str(uuid.uuid5(uuid.NAMESPACE_URL, 'skill_tree')).split('-'))
-        return "c-" + uuid.uuid4().hex
+        return "tc-" + uuid.uuid4().hex
 
     def list_dir(p):
         v = os.listdir(p)