diff --git a/examples/aishell/s0/local/avg.sh b/examples/aishell/s0/local/avg.sh
deleted file mode 100755
index 8589e35308c97fdcb1abbb13bcf35ca4042c3ae2..0000000000000000000000000000000000000000
--- a/examples/aishell/s0/local/avg.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-#! /usr/bin/env bash
-
-if [ $# != 2 ];then
-    echo "usage: ${0} ckpt_dir avg_num"
-    exit -1
-fi
-
-ckpt_dir=${1}
-average_num=${2}
-decode_checkpoint=${ckpt_dir}/avg_${average_num}.pdparams
-
-python3 -u ${MAIN_ROOT}/utils/avg_model.py \
---dst_model ${decode_checkpoint} \
---ckpt_dir ${ckpt_dir}  \
---num ${average_num} \
---val_best
-            
-if [ $? -ne 0 ]; then
-    echo "Failed in avg ckpt!"
-    exit 1
-fi
-
-exit 0
\ No newline at end of file
diff --git a/examples/aishell/s1/local/test.sh b/examples/aishell/s1/local/test.sh
index 0dfabc6e4b5d86eb262580edb03dbdc4b98117fa..073aaffd4ddfe1a982280c7c0891a05b10f2ad12 100755
--- a/examples/aishell/s1/local/test.sh
+++ b/examples/aishell/s1/local/test.sh
@@ -15,6 +15,10 @@ fi
 config_path=$1
 ckpt_prefix=$2
 
+ckpt_name=$(basename ${ckpt_prefxi})
+
+mkdir -p exp
+
 # download language model
 #bash local/download_lm_ch.sh
 #if [ $? -ne 0 ]; then
@@ -25,11 +29,13 @@ ckpt_prefix=$2
 for type in attention ctc_greedy_search; do
     echo "decoding ${type}"
     batch_size=64
+    output_dir=${ckpt_prefix}
+    mkdir -p ${output_dir}
     python3 -u ${BIN_DIR}/test.py \
     --device ${device} \
     --nproc 1 \
     --config ${config_path} \
-    --result_file ${ckpt_prefix}.${type}.rsl \
+    --result_file ${output_dir}/${type}.rsl \
     --checkpoint_path ${ckpt_prefix} \
     --opts decoding.decoding_method ${type} decoding.batch_size ${batch_size}
 
@@ -42,11 +48,13 @@ done
 for type in ctc_prefix_beam_search attention_rescoring; do
     echo "decoding ${type}"
     batch_size=1
+    output_dir=${ckpt_prefix}
+    mkdir -p ${output_dir}
     python3 -u ${BIN_DIR}/test.py \
     --device ${device} \
     --nproc 1 \
     --config ${config_path} \
-    --result_file ${ckpt_prefix}.${type}.rsl \
+    --result_file ${output_dir}/${type}.rsl \
     --checkpoint_path ${ckpt_prefix} \
     --opts decoding.decoding_method ${type} decoding.batch_size ${batch_size}
 
diff --git a/examples/chinese_g2p/.gitignore b/examples/chinese_g2p/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..bbd86a25b018bc611bf6ae52cbb6afa5f60bce62
--- /dev/null
+++ b/examples/chinese_g2p/.gitignore
@@ -0,0 +1,2 @@
+data
+exp
diff --git a/examples/chinese_g2p/local/prepare_dataset.sh b/examples/chinese_g2p/local/prepare_dataset.sh
index fe9948ed3f9cfcf4e8b61ad9100c41439710126a..3933d96cfbd5f8c18bb3b423cbdf2c8619273d66 100644
--- a/examples/chinese_g2p/local/prepare_dataset.sh
+++ b/examples/chinese_g2p/local/prepare_dataset.sh
@@ -1,7 +1,8 @@
-echo "Extracting Prosody Labeling"
+#!/bin/bash
 
 exp_dir="exp"
 data_dir="data"
+
 source ${MAIN_ROOT}/utils/parse_options.sh || exit -1
 
 archive=${data_dir}/"BZNSYP.rar"
@@ -17,7 +18,7 @@ if [ ${md5_result} != ${MD5} ]; then
     exit -1
 fi
 
-   
+
 label_file='ProsodyLabeling/000001-010000.txt'
 filename='000001-010000.txt'
 unrar e ${archive} ${label_file}
diff --git a/examples/chinese_g2p/run.sh b/examples/chinese_g2p/run.sh
old mode 100644
new mode 100755
index 6bde2e264a0d4411625b7d1bbf496d3034e395ee..8197dce4bea7f39182d40b510883be222939ddeb
--- a/examples/chinese_g2p/run.sh
+++ b/examples/chinese_g2p/run.sh
@@ -1,22 +1,33 @@
 #!/usr/bin/env bash
+
 source path.sh
 
 stage=-1
 stop_stage=100
 
-exp_dir="exp"
-data_dir="data"
+exp_dir=exp
+data_dir=data
+
 source ${MAIN_ROOT}/utils/parse_options.sh || exit -1
+
 mkdir -p ${exp_dir}
-bash local/prepare_dataset.sh --exp-dir ${exp_dir} --data-dir ${data_dir}
+
+
+if [ $stage -le 0 ] && [ $stop_stage -ge 0 ];then
+    echo "stage 0: Extracting Prosody Labeling"
+    bash local/prepare_dataset.sh --exp-dir ${exp_dir} --data-dir ${data_dir}
+fi
 
 # convert transcription in chinese into pinyin with pypinyin or jieba+pypinyin
 filename="000001-010000.txt"
-echo "Processing transcriptions..."
 
-python3 local/extract_pinyin_label.py ${exp_dir}/${filename} ${exp_dir}/"pinyin_baker.py"
-python3 local/convert_transcription.py ${exp_dir}/${filename} ${exp_dir}/"result_pypinyin.txt"
-python3 local/convert_transcription.py --use-jieba ${exp_dir}/${filename} ${exp_dir}/"result_pypinyin_with_jieba.txt"
+if [ $stage -le 1 ] && [ $stop_stage -ge 1 ]; then
+    echo "stage 1: Processing transcriptions..."
+    python3 local/extract_pinyin_label.py ${exp_dir}/${filename} ${exp_dir}/ref.pinyin
+
+    python3 local/convert_transcription.py ${exp_dir}/${filename} ${exp_dir}/trans.pinyin
+    python3 local/convert_transcription.py --use-jieba ${exp_dir}/${filename} ${exp_dir}/trans.jieba.pinyin
+fi
 
 echo "done"
 exit 0
diff --git a/examples/librispeech/s0/local/avg.sh b/examples/librispeech/s0/local/avg.sh
deleted file mode 100755
index 8589e35308c97fdcb1abbb13bcf35ca4042c3ae2..0000000000000000000000000000000000000000
--- a/examples/librispeech/s0/local/avg.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-#! /usr/bin/env bash
-
-if [ $# != 2 ];then
-    echo "usage: ${0} ckpt_dir avg_num"
-    exit -1
-fi
-
-ckpt_dir=${1}
-average_num=${2}
-decode_checkpoint=${ckpt_dir}/avg_${average_num}.pdparams
-
-python3 -u ${MAIN_ROOT}/utils/avg_model.py \
---dst_model ${decode_checkpoint} \
---ckpt_dir ${ckpt_dir}  \
---num ${average_num} \
---val_best
-            
-if [ $? -ne 0 ]; then
-    echo "Failed in avg ckpt!"
-    exit 1
-fi
-
-exit 0
\ No newline at end of file
diff --git a/examples/librispeech/s1/conf/conformer.yaml b/examples/librispeech/s1/conf/conformer.yaml
index fdc435b8a7b55590022c23c6e748cb86fc0a92a2..8f8bf45398813179db88781dcfc5c71356295934 100644
--- a/examples/librispeech/s1/conf/conformer.yaml
+++ b/examples/librispeech/s1/conf/conformer.yaml
@@ -14,7 +14,7 @@ data:
   min_output_len: 0.0 # tokens
   max_output_len: 400.0 # tokens
   min_output_input_ratio: 0.05
-  max_output_input_ratio: 10.0 
+  max_output_input_ratio: 10.0
   raw_wav: True  # use raw_wav or kaldi feature
   specgram_type: fbank #linear, mfcc, fbank
   feat_dim: 80
@@ -77,7 +77,7 @@ model:
 training:
   n_epoch: 120
   accum_grad: 8
-  global_grad_clip: 5.0
+  global_grad_clip: 3.0
   optim: adam
   optim_conf:
     lr: 0.004
diff --git a/examples/librispeech/s1/local/avg.sh b/examples/librispeech/s1/local/avg.sh
deleted file mode 100755
index 3d15ce2372917ac135ebeaedd8d2ea98c0289969..0000000000000000000000000000000000000000
--- a/examples/librispeech/s1/local/avg.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-#! /usr/bin/env bash
-
-if [ $# != 2 ]; then
-    echo "usage: ${0} ckpt_dir avg_num"
-    exit -1
-fi
-
-ckpt_dir=${1}
-average_num=${2}
-decode_checkpoint=${ckpt_dir}/avg_${average_num}.pdparams
-
-python3 -u ${MAIN_ROOT}/utils/avg_model.py \
---dst_model ${decode_checkpoint} \
---ckpt_dir ${ckpt_dir}  \
---num ${average_num} \
---val_best
-
-if [ $? -ne 0 ]; then
-    echo "Failed in avg ckpt!"
-    exit 1
-fi
-
-exit 0
diff --git a/examples/tiny/s0/local/avg.sh b/examples/tiny/s0/local/avg.sh
deleted file mode 100755
index 8589e35308c97fdcb1abbb13bcf35ca4042c3ae2..0000000000000000000000000000000000000000
--- a/examples/tiny/s0/local/avg.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-#! /usr/bin/env bash
-
-if [ $# != 2 ];then
-    echo "usage: ${0} ckpt_dir avg_num"
-    exit -1
-fi
-
-ckpt_dir=${1}
-average_num=${2}
-decode_checkpoint=${ckpt_dir}/avg_${average_num}.pdparams
-
-python3 -u ${MAIN_ROOT}/utils/avg_model.py \
---dst_model ${decode_checkpoint} \
---ckpt_dir ${ckpt_dir}  \
---num ${average_num} \
---val_best
-            
-if [ $? -ne 0 ]; then
-    echo "Failed in avg ckpt!"
-    exit 1
-fi
-
-exit 0
\ No newline at end of file
diff --git a/examples/tiny/s1/local/avg.sh b/examples/tiny/s1/local/avg.sh
deleted file mode 100755
index 8589e35308c97fdcb1abbb13bcf35ca4042c3ae2..0000000000000000000000000000000000000000
--- a/examples/tiny/s1/local/avg.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-#! /usr/bin/env bash
-
-if [ $# != 2 ];then
-    echo "usage: ${0} ckpt_dir avg_num"
-    exit -1
-fi
-
-ckpt_dir=${1}
-average_num=${2}
-decode_checkpoint=${ckpt_dir}/avg_${average_num}.pdparams
-
-python3 -u ${MAIN_ROOT}/utils/avg_model.py \
---dst_model ${decode_checkpoint} \
---ckpt_dir ${ckpt_dir}  \
---num ${average_num} \
---val_best
-            
-if [ $? -ne 0 ]; then
-    echo "Failed in avg ckpt!"
-    exit 1
-fi
-
-exit 0
\ No newline at end of file
diff --git a/examples/aishell/s1/local/avg.sh b/utils/avg.sh
similarity index 88%
rename from examples/aishell/s1/local/avg.sh
rename to utils/avg.sh
index 3d15ce2372917ac135ebeaedd8d2ea98c0289969..c8a6ddfea7b819001c5359605a969f48554af6f0 100755
--- a/examples/aishell/s1/local/avg.sh
+++ b/utils/avg.sh
@@ -9,7 +9,7 @@ ckpt_dir=${1}
 average_num=${2}
 decode_checkpoint=${ckpt_dir}/avg_${average_num}.pdparams
 
-python3 -u ${MAIN_ROOT}/utils/avg_model.py \
+avg_model.py \
 --dst_model ${decode_checkpoint} \
 --ckpt_dir ${ckpt_dir}  \
 --num ${average_num} \
diff --git a/utils/avg_model.py b/utils/avg_model.py
index 0794c4b8f1f9ea9d784fdb7fefebf6edd4795ee9..8ec792f5222bf9df9ae8576d7cce4c4bc7290538 100755
--- a/utils/avg_model.py
+++ b/utils/avg_model.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/utils/build_vocab.py b/utils/build_vocab.py
index 609ce8e7e2e45a16e8078cb97e46024ed5646168..76092b25dbbded9354c3f6f1e70a058fbd50e913 100755
--- a/utils/build_vocab.py
+++ b/utils/build_vocab.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -70,8 +71,8 @@ def main():
     fout.write(UNK + '\n')  # <unk> must be 1
 
     if args.unit_type == 'spm':
-        # tools/spm_train --input=$wave_data/lang_char/input.txt 
-        # --vocab_size=${nbpe} --model_type=${bpemode} 
+        # tools/spm_train --input=$wave_data/lang_char/input.txt
+        # --vocab_size=${nbpe} --model_type=${bpemode}
         # --model_prefix=${bpemodel} --input_sentence_size=100000000
         import sentencepiece as spm
 
diff --git a/utils/compute_mean_std.py b/utils/compute_mean_std.py
index aff6f47c6ee04629bc56ee44ab56294a272f044d..a468153d3d2bba4a9afee02e933e6bf3c942606f 100755
--- a/utils/compute_mean_std.py
+++ b/utils/compute_mean_std.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/utils/format_data.py b/utils/format_data.py
index 9565da14a8a2fd47fb898c7cdbbb7053edc101a2..72262b2ffe6203e9efc475ff0efef49b9e8b5b45 100755
--- a/utils/format_data.py
+++ b/utils/format_data.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/utils/spm_decode b/utils/spm_decode
index 8497ad8110f5b4a5834aab99320329a3a2675fc3..f22c5bb30961c447f654d7ef75c58ade44168e9e 100755
--- a/utils/spm_decode
+++ b/utils/spm_decode
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Copyright (c) Facebook, Inc. and its affiliates.
 # All rights reserved.
 #
diff --git a/utils/spm_encode b/utils/spm_encode
index 99357045a4abd123764bf836eda0ffe7485985d0..92ac5c1d9f49284e47d9bd5aaf5e451fff1beb03 100755
--- a/utils/spm_encode
+++ b/utils/spm_encode
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Copyright (c) Facebook, Inc. and its affiliates.
 # All rights reserved.
 #