diff --git a/examples/aishell/s0/path.sh b/examples/aishell/s0/path.sh
index 552b9678..e6d3a655 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:${PATH}
 export LC_ALL=C
diff --git a/examples/aishell/s1/path.sh b/examples/aishell/s1/path.sh
index 6214c8ac..6807a950 100644
--- a/examples/aishell/s1/path.sh
+++ b/examples/aishell/s1/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/callcenter/s1/path.sh b/examples/callcenter/s1/path.sh
index 30adb6ca..29841bc1 100644
--- a/examples/callcenter/s1/path.sh
+++ b/examples/callcenter/s1/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/cc-cedict/path.sh b/examples/cc-cedict/path.sh
index 84e2de7d..f8fdd82d 100644
--- a/examples/cc-cedict/path.sh
+++ b/examples/cc-cedict/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../
+export MAIN_ROOT=`realpath ${PWD}/../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/chinese_g2p/path.sh b/examples/chinese_g2p/path.sh
index b4c625f9..482177dc 100644
--- a/examples/chinese_g2p/path.sh
+++ b/examples/chinese_g2p/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../
+export MAIN_ROOT=`realpath ${PWD}/../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/librispeech/s0/path.sh b/examples/librispeech/s0/path.sh
index 777da29e..8a9345f2 100644
--- a/examples/librispeech/s0/path.sh
+++ b/examples/librispeech/s0/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/librispeech/s1/path.sh b/examples/librispeech/s1/path.sh
index 22fb1255..457f7e54 100644
--- a/examples/librispeech/s1/path.sh
+++ b/examples/librispeech/s1/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${PWD}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/librispeech/s2/path.sh b/examples/librispeech/s2/path.sh
index 22fb1255..457f7e54 100644
--- a/examples/librispeech/s2/path.sh
+++ b/examples/librispeech/s2/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${PWD}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/ngram_lm/s0/path.sh b/examples/ngram_lm/s0/path.sh
index 5f580bc4..cbd1d82c 100644
--- a/examples/ngram_lm/s0/path.sh
+++ b/examples/ngram_lm/s0/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
diff --git a/examples/spm/path.sh b/examples/spm/path.sh
index 9da641e1..20237889 100644
--- a/examples/spm/path.sh
+++ b/examples/spm/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${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 00000000..5664b06b
--- /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 10a3e7f5..755e0446 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 881a5b91..a7f60425 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:${PATH}
 export LC_ALL=C
diff --git a/examples/ted_en_zh/run.sh b/examples/ted_en_zh/t0/run.sh
similarity index 100%
rename from examples/ted_en_zh/run.sh
rename to examples/ted_en_zh/t0/run.sh
diff --git a/examples/text_normalization/path.sh b/examples/text_normalization/path.sh
index 7cec3a24..30689eee 100644
--- a/examples/text_normalization/path.sh
+++ b/examples/text_normalization/path.sh
@@ -1,4 +1,5 @@
-export MAIN_ROOT=${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 08e13c19..fc953beb 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:${PATH}
 export LC_ALL=C
diff --git a/examples/timit/s1/path.sh b/examples/timit/s1/path.sh
index a632babe..29841bc1 100644
--- a/examples/timit/s1/path.sh
+++ b/examples/timit/s1/path.sh
@@ -1,4 +1,5 @@
-export MAIN_ROOT=${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 777da29e..8a9345f2 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:${PATH}
 export LC_ALL=C
diff --git a/examples/tiny/s1/path.sh b/examples/tiny/s1/path.sh
index 30adb6ca..29841bc1 100644
--- a/examples/tiny/s1/path.sh
+++ b/examples/tiny/s1/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../../
+export MAIN_ROOT=`realpath ${PWD}/../../../`
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C