diff --git a/examples/aishell/s0/path.sh b/examples/aishell/s0/path.sh
index 552b96783b930b5d1d7cc94a919dc4c71e1fdde2..e6d3a655b49337a33d7697e94f1be541ac2db780 100644
--- a/examples/aishell/s0/path.sh
+++ b/examples/aishell/s0/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/aishell/s1/path.sh b/examples/aishell/s1/path.sh
index 6214c8acea38a11a67a1b796119795616d0c813a..6807a9505ae68a16c59ec4571f154464423cfbf2 100644
--- a/examples/aishell/s1/path.sh
+++ b/examples/aishell/s1/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/callcenter/s1/path.sh b/examples/callcenter/s1/path.sh
index 30adb6ca029e9accc094f19e1764069ce54d8538..29841bc10130a012d5d5eb92855a0394e9acff93 100644
--- a/examples/callcenter/s1/path.sh
+++ b/examples/callcenter/s1/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/cc-cedict/path.sh b/examples/cc-cedict/path.sh
index 84e2de7d0869a1ae50df6e148926e71ee18b6089..f8fdd82d740ffc0ed7d8f996ba75ee7f02fda811 100644
--- a/examples/cc-cedict/path.sh
+++ b/examples/cc-cedict/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../
+export MAIN_ROOT=`realpath ${PWD}/../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/chinese_g2p/path.sh b/examples/chinese_g2p/path.sh
index b4c625f958d3f85372dfe93bf13aee9b45f08175..482177dc6367acc8a4eb7fb71d66c3271f763645 100644
--- a/examples/chinese_g2p/path.sh
+++ b/examples/chinese_g2p/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../
+export MAIN_ROOT=`realpath ${PWD}/../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/librispeech/s0/path.sh b/examples/librispeech/s0/path.sh
index 777da29efebd1a732258438bca0b9709611c4073..8a9345f2ec18e0bb5fc77906d068cbf6087ead04 100644
--- a/examples/librispeech/s0/path.sh
+++ b/examples/librispeech/s0/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/librispeech/s1/path.sh b/examples/librispeech/s1/path.sh
index 22fb12559e0f9398ee13374188ce9aafb9aac4b5..457f7e548cbc777454a0ded763bd5f727f30a093 100644
--- a/examples/librispeech/s1/path.sh
+++ b/examples/librispeech/s1/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${PWD}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/librispeech/s2/path.sh b/examples/librispeech/s2/path.sh
index 22fb12559e0f9398ee13374188ce9aafb9aac4b5..457f7e548cbc777454a0ded763bd5f727f30a093 100644
--- a/examples/librispeech/s2/path.sh
+++ b/examples/librispeech/s2/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${PWD}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/ngram_lm/s0/path.sh b/examples/ngram_lm/s0/path.sh
index 5f580bc4ba5c69accd4974466439e76821e21454..cbd1d82c06060af1f9fd658f038d566dd5341506 100644
--- a/examples/ngram_lm/s0/path.sh
+++ b/examples/ngram_lm/s0/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/spm/path.sh b/examples/spm/path.sh
index 9da641e19603a4140c27e0732a529d60689ee132..2023788944693b00350bf8ced628d73148280793 100644
--- a/examples/spm/path.sh
+++ b/examples/spm/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../
+export MAIN_ROOT=`realpath ${PWD}/../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/ted_en_zh/README.md b/examples/ted_en_zh/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..5664b06b31a299b662df6d87e07222ecae1d1d5f
--- /dev/null
+++ b/examples/ted_en_zh/README.md
@@ -0,0 +1,3 @@
+# TED En -> Zh
+
+* t0 for u2 speech translation
diff --git a/examples/ted_en_zh/conf/transformer.yaml b/examples/ted_en_zh/t0/conf/transformer.yaml
similarity index 97%
rename from examples/ted_en_zh/conf/transformer.yaml
rename to examples/ted_en_zh/t0/conf/transformer.yaml
index 10a3e7f5799d8dda8c3c39a5c5ef63c43a245d89..755e044614f921037bf16b8e65458ed15c85b3e3 100644
--- a/examples/ted_en_zh/conf/transformer.yaml
+++ b/examples/ted_en_zh/t0/conf/transformer.yaml
@@ -3,8 +3,8 @@ data:
   train_manifest: data/manifest.train.tiny
   dev_manifest: data/manifest.dev
   test_manifest: data/manifest.test
-  min_input_len: 0.5  # second
-  max_input_len: 3000.0 # second
+  min_input_len: 0.05  # second
+  max_input_len: 30.0 # second
   min_output_len: 0.0 # tokens
   max_output_len: 400.0 # tokens
   min_output_input_ratio: 0.01
diff --git a/examples/ted_en_zh/conf/transformer_joint_noam.yaml b/examples/ted_en_zh/t0/conf/transformer_joint_noam.yaml
similarity index 100%
rename from examples/ted_en_zh/conf/transformer_joint_noam.yaml
rename to examples/ted_en_zh/t0/conf/transformer_joint_noam.yaml
diff --git a/examples/ted_en_zh/local/data.sh b/examples/ted_en_zh/t0/local/data.sh
similarity index 100%
rename from examples/ted_en_zh/local/data.sh
rename to examples/ted_en_zh/t0/local/data.sh
diff --git a/examples/ted_en_zh/local/test.sh b/examples/ted_en_zh/t0/local/test.sh
similarity index 100%
rename from examples/ted_en_zh/local/test.sh
rename to examples/ted_en_zh/t0/local/test.sh
diff --git a/examples/ted_en_zh/local/train.sh b/examples/ted_en_zh/t0/local/train.sh
similarity index 100%
rename from examples/ted_en_zh/local/train.sh
rename to examples/ted_en_zh/t0/local/train.sh
diff --git a/examples/ted_en_zh/path.sh b/examples/ted_en_zh/t0/path.sh
similarity index 88%
rename from examples/ted_en_zh/path.sh
rename to examples/ted_en_zh/t0/path.sh
index 881a5b9189a72a9dbcef033345a5e00ca611b4a4..a7f60425f304f4e48dd06bfea43e07b9fc191d26 100644
--- a/examples/ted_en_zh/path.sh
+++ b/examples/ted_en_zh/t0/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/ted_en_zh/run.sh b/examples/ted_en_zh/t0/run.sh
similarity index 100%
rename from examples/ted_en_zh/run.sh
rename to examples/ted_en_zh/t0/run.sh
diff --git a/examples/text_normalization/path.sh b/examples/text_normalization/path.sh
index 7cec3a24d3d80db44e7db6339e80cdd698fe2aec..30689eee7464da499830e4a47a8781fde1ca3c0d 100644
--- a/examples/text_normalization/path.sh
+++ b/examples/text_normalization/path.sh
@@ -1,4 +1,5 @@
-export MAIN_ROOT=${PWD}/../../
+export MAIN_ROOT=`realpath ${PWD}/../../`
+
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
 
diff --git a/examples/thchs30/a0/path.sh b/examples/thchs30/a0/path.sh
index 08e13c1998d7322c908732156214f15a23ee4c9d..fc953bebfe2a10d8da74ca6f7d7e393c378c453c 100644
--- a/examples/thchs30/a0/path.sh
+++ b/examples/thchs30/a0/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/timit/s1/path.sh b/examples/timit/s1/path.sh
index a632babe405806b5d04ed8859d0c65cfa397076c..29841bc10130a012d5d5eb92855a0394e9acff93 100644
--- a/examples/timit/s1/path.sh
+++ b/examples/timit/s1/path.sh
@@ -1,4 +1,5 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
+
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
 
diff --git a/examples/tiny/s0/path.sh b/examples/tiny/s0/path.sh
index 777da29efebd1a732258438bca0b9709611c4073..8a9345f2ec18e0bb5fc77906d068cbf6087ead04 100644
--- a/examples/tiny/s0/path.sh
+++ b/examples/tiny/s0/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/tiny/s1/path.sh b/examples/tiny/s1/path.sh
index 30adb6ca029e9accc094f19e1764069ce54d8538..29841bc10130a012d5d5eb92855a0394e9acff93 100644
--- a/examples/tiny/s1/path.sh
+++ b/examples/tiny/s1/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C