diff --git a/speechx/CMakeLists.txt b/speechx/CMakeLists.txt
index 17e64c04a303172cd516f507c78b23932dff7ff2..6255cb2e295dea9e2d106540e370a98b703f9d78 100644
--- a/speechx/CMakeLists.txt
+++ b/speechx/CMakeLists.txt
@@ -100,8 +100,9 @@ message(STATUS "Python3_EXECUTABLE = ${Python3_EXECUTABLE}")
 message(STATUS "Pybind11_INCLUDES = ${pybind11_INCLUDE_DIRS}, pybind11_LIBRARIES=${pybind11_LIBRARIES}, pybind11_DEFINITIONS=${pybind11_DEFINITIONS}")
 
 # paddle include and link option
+# -L/workspace/DeepSpeech-2.x/speechx/venv/lib/python3.7/site-packages/paddle/libs -L/workspace/DeepSpeech-2.x/speechx/venv/lib/python3.7/site-packages/paddle/fluid -l:libpaddle.so -l:libdnnl.so.2 -l:libiomp5.so
 execute_process(
-    COMMAND python -c "import paddle ; print(' '.join(paddle.sysconfig.get_link_flags()), end='')"
+    COMMAND python -c "import os; import paddle; include_dir=paddle.sysconfig.get_include(); paddle_dir=os.path.split(include_dir)[0]; libs_dir=os.path.join(paddle_dir, 'libs'); fluid_dir=os.path.join(paddle_dir, 'fluid'); out=' '.join([\"-L\" + libs_dir, \"-L\" + fluid_dir]); out += \" -l:libpaddle.so -l:libdnnl.so.2 -l:libiomp5.so\"; print(out);"
     OUTPUT_VARIABLE PADDLE_LINK_FLAGS
     RESULT_VARIABLE SUCESS)
 
@@ -109,8 +110,9 @@ message(STATUS PADDLE_LINK_FLAGS= ${PADDLE_LINK_FLAGS})
 string(STRIP ${PADDLE_LINK_FLAGS} PADDLE_LINK_FLAGS)
 
 # paddle compile option
+# -I/workspace/DeepSpeech-2.x/speechx/venv/lib/python3.7/site-packages/paddle/include
 execute_process(
-    COMMAND python -c "import paddle ; print(' '.join(paddle.sysconfig.get_compile_flags()), end='')"
+    COMMAND python -c "import paddle; include_dir = paddle.sysconfig.get_include(); print(f\"-I{include_dir}\");"
     OUTPUT_VARIABLE PADDLE_COMPILE_FLAGS)
 message(STATUS PADDLE_COMPILE_FLAGS= ${PADDLE_COMPILE_FLAGS})
 string(STRIP ${PADDLE_COMPILE_FLAGS} PADDLE_COMPILE_FLAGS)
@@ -119,7 +121,7 @@ string(STRIP ${PADDLE_COMPILE_FLAGS} PADDLE_COMPILE_FLAGS)
 # for LD_LIBRARY_PATH
 # set(PADDLE_LIB_DIRS /workspace/DeepSpeech-2.x/tools/venv/lib/python3.7/site-packages/paddle/fluid:/workspace/DeepSpeech-2.x/tools/venv/lib/python3.7/site-packages/paddle/libs/)
 execute_process(
-    COMMAND python -c "import paddle ; print(':'.join(paddle.sysconfig.get_lib()), end='')"
+    COMMAND python -c "import os; import paddle; include_dir=paddle.sysconfig.get_include(); paddle_dir=os.path.split(include_dir)[0]; libs_dir=os.path.join(paddle_dir, 'libs'); fluid_dir=os.path.join(paddle_dir, 'fluid'); out=':'.join([libs_dir, fluid_dir]); print(out);"
     OUTPUT_VARIABLE PADDLE_LIB_DIRS)
 message(STATUS PADDLE_LIB_DIRS= ${PADDLE_LIB_DIRS})
 
diff --git a/speechx/README.md b/speechx/README.md
index cc7b13e6a4d882404a8129539b862ad55fc36ae3..3861edf31cc95e4492c512e485936d149de6c6f5 100644
--- a/speechx/README.md
+++ b/speechx/README.md
@@ -35,11 +35,15 @@ bash tools/venv.sh
 
 2. Build `speechx` and `examples`.
 
+For now we using feature under `develop` branch of paddle, so we need install `paddlepaddle` nightly build version.
+For example: 
 ```
 source venv/bin/activate
+python -m pip install paddlepaddle==0.0.0 -f https://www.paddlepaddle.org.cn/whl/linux/cpu-mkl/develop.html
 ./build.sh
 ```
 
+
 3. Go to `examples` to have a fun.
 
 More details please see `README.md` under `examples`.
diff --git a/speechx/examples/README.md b/speechx/examples/README.md
index f7f6f9ac062fbddf2083fd12da8ec94db73463d2..de27bd94b8622c9baa9d3365da7cd411058c86f1 100644
--- a/speechx/examples/README.md
+++ b/speechx/examples/README.md
@@ -1,20 +1,42 @@
 # Examples for SpeechX
 
+> `u2pp_ol` is recommended.
+
+* `u2pp_ol` - u2++ streaming asr test under `aishell-1` test dataset.
 * `ds2_ol` - ds2 streaming test under `aishell-1` test dataset. 
 
+
 ## How to run  
 
-`run.sh` is the entry point.
+### Create env
+
+Using `tools/evn.sh` under `speechx` to create python env.
+
+```
+bash tools/env.sh
+```
+
+Source env before play with example.
+```
+. venv/bin/activate
+```
+
+### Play with example
+
+`run.sh` is the entry point for every example.
 
-Example to play `ds2_ol`:
+Example to play `u2pp_ol`:
 
 ```
-pushd ds2_ol/aishell
-bash run.sh
+pushd u2pp_ol/wenetspeech
+bash run.sh --stop_stage 4
 ```
 
 ## Display Model with [Netron](https://github.com/lutzroeder/netron)  
 
+If you have a model, we can using this commnd to show model graph.
+
+For example:
 ```
 pip install netron
 netron exp/deepspeech2_online/checkpoints/avg_1.jit.pdmodel  --port 8022 --host 10.21.55.20
diff --git a/speechx/examples/codelab/README.md b/speechx/examples/codelab/README.md
index f89184de9b1795f82daa23f79207c4047b55bc46..803f25facbf809fc71b7374f800d03abc74e0f7b 100644
--- a/speechx/examples/codelab/README.md
+++ b/speechx/examples/codelab/README.md
@@ -1,8 +1,9 @@
 # Codelab
 
-## introduction
+> The below is for developing and offline testing. 
+> Do not run it only if you know what it is.
 
-> The below is for developing and offline testing. Do not run it only if you know what it is.
 * nnet
 * feat
 * decoder
+* u2
diff --git a/speechx/examples/codelab/u2/path.sh b/speechx/examples/codelab/u2/path.sh
index d060013350c60cb8500e742e7bf51a3dbd08388f..ec278bd3d4f5ca60813316a1b74201fa812f9723 100644
--- a/speechx/examples/codelab/u2/path.sh
+++ b/speechx/examples/codelab/u2/path.sh
@@ -14,5 +14,5 @@ export LC_AL=C
 
 export PATH=$PATH:$TOOLS_BIN:$SPEECHX_BUILD/nnet:$SPEECHX_BUILD/decoder:$SPEECHX_BUILD/frontend/audio:$SPEECHX_BUILD/recognizer
 
-PADDLE_LIB_PATH=$(python -c "import paddle ; print(':'.join(paddle.sysconfig.get_lib()), end='')")
+PADDLE_LIB_PATH=$(python -c "import os; import paddle; include_dir=paddle.sysconfig.get_include(); paddle_dir=os.path.split(include_dir)[0]; libs_dir=os.path.join(paddle_dir, 'libs'); fluid_dir=os.path.join(paddle_dir, 'fluid'); out=':'.join([libs_dir, fluid_dir]); print(out);")
 export LD_LIBRARY_PATH=$PADDLE_LIB_PATH:$LD_LIBRARY_PATH
diff --git a/speechx/examples/u2pp_ol/README.md b/speechx/examples/u2pp_ol/README.md
index ce01a8fc7f7fe499445bb4e352d2dd96025afb14..838db435cfe7303e1bd362d6ef763c969d8fb82f 100644
--- a/speechx/examples/u2pp_ol/README.md
+++ b/speechx/examples/u2pp_ol/README.md
@@ -2,4 +2,4 @@
 
 ## Examples
 
-* `wenetspeech` - Streaming Decoding using wenetspeech u2/u2++ model. Using aishell test data for testing.    
+* `wenetspeech` - Streaming Decoding with wenetspeech u2/u2++ model. Using aishell test data for testing.    
diff --git a/speechx/examples/u2pp_ol/wenetspeech/path.sh b/speechx/examples/u2pp_ol/wenetspeech/path.sh
index d060013350c60cb8500e742e7bf51a3dbd08388f..ec278bd3d4f5ca60813316a1b74201fa812f9723 100644
--- a/speechx/examples/u2pp_ol/wenetspeech/path.sh
+++ b/speechx/examples/u2pp_ol/wenetspeech/path.sh
@@ -14,5 +14,5 @@ export LC_AL=C
 
 export PATH=$PATH:$TOOLS_BIN:$SPEECHX_BUILD/nnet:$SPEECHX_BUILD/decoder:$SPEECHX_BUILD/frontend/audio:$SPEECHX_BUILD/recognizer
 
-PADDLE_LIB_PATH=$(python -c "import paddle ; print(':'.join(paddle.sysconfig.get_lib()), end='')")
+PADDLE_LIB_PATH=$(python -c "import os; import paddle; include_dir=paddle.sysconfig.get_include(); paddle_dir=os.path.split(include_dir)[0]; libs_dir=os.path.join(paddle_dir, 'libs'); fluid_dir=os.path.join(paddle_dir, 'fluid'); out=':'.join([libs_dir, fluid_dir]); print(out);")
 export LD_LIBRARY_PATH=$PADDLE_LIB_PATH:$LD_LIBRARY_PATH