diff --git a/examples/ngram_lm/README.md b/examples/ngram_lm/s0/README.md
similarity index 100%
rename from examples/ngram_lm/README.md
rename to examples/ngram_lm/s0/README.md
diff --git a/examples/ngram_lm/data/README.md b/examples/ngram_lm/s0/data/README.md
similarity index 100%
rename from examples/ngram_lm/data/README.md
rename to examples/ngram_lm/s0/data/README.md
diff --git a/examples/ngram_lm/data/custom_confusion.txt b/examples/ngram_lm/s0/data/custom_confusion.txt
similarity index 100%
rename from examples/ngram_lm/data/custom_confusion.txt
rename to examples/ngram_lm/s0/data/custom_confusion.txt
diff --git a/examples/ngram_lm/data/text_correct.txt b/examples/ngram_lm/s0/data/text_correct.txt
similarity index 100%
rename from examples/ngram_lm/data/text_correct.txt
rename to examples/ngram_lm/s0/data/text_correct.txt
diff --git a/examples/ngram_lm/local/build_zh_lm.sh b/examples/ngram_lm/s0/local/build_zh_lm.sh
similarity index 100%
rename from examples/ngram_lm/local/build_zh_lm.sh
rename to examples/ngram_lm/s0/local/build_zh_lm.sh
diff --git a/examples/ngram_lm/local/download_lm_zh.sh b/examples/ngram_lm/s0/local/download_lm_zh.sh
similarity index 100%
rename from examples/ngram_lm/local/download_lm_zh.sh
rename to examples/ngram_lm/s0/local/download_lm_zh.sh
diff --git a/examples/ngram_lm/local/kenlm_score_test.py b/examples/ngram_lm/s0/local/kenlm_score_test.py
similarity index 100%
rename from examples/ngram_lm/local/kenlm_score_test.py
rename to examples/ngram_lm/s0/local/kenlm_score_test.py
diff --git a/examples/ngram_lm/path.sh b/examples/ngram_lm/s0/path.sh
similarity index 69%
rename from examples/ngram_lm/path.sh
rename to examples/ngram_lm/s0/path.sh
index 84e2de7d..5f580bc4 100644
--- a/examples/ngram_lm/path.sh
+++ b/examples/ngram_lm/s0/path.sh
@@ -1,4 +1,4 @@
-export MAIN_ROOT=${PWD}/../../
+export MAIN_ROOT=${PWD}/../../../
 
 export PATH=${MAIN_ROOT}:${MAIN_ROOT}/utils:${PATH}
 export LC_ALL=C
@@ -7,4 +7,4 @@ export LC_ALL=C
 export PYTHONIOENCODING=UTF-8
 export PYTHONPATH=${MAIN_ROOT}:${PYTHONPATH}
 
-export LD_LIBRARY_PATH=/usr/local/lib/:${LD_LIBRARY_PATH}
\ No newline at end of file
+export LD_LIBRARY_PATH=/usr/local/lib/:${LD_LIBRARY_PATH}
diff --git a/examples/ngram_lm/requirements.txt b/examples/ngram_lm/s0/requirements.txt
similarity index 100%
rename from examples/ngram_lm/requirements.txt
rename to examples/ngram_lm/s0/requirements.txt
diff --git a/examples/ngram_lm/run.sh b/examples/ngram_lm/s0/run.sh
similarity index 100%
rename from examples/ngram_lm/run.sh
rename to examples/ngram_lm/s0/run.sh