diff --git a/README.md b/README.md
index 34529e8..956185a 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,8 @@ The script is a new edition of an earlier [mkstage4 script](https://github.com/g
  
 More information on mkstage4 can be found on its own Chymeric Tutorials article: [mkstage4 - Stage 4 Tarballs Made Easy](http://tutorials.chymera.eu/blog/2014/05/18/mkstage4-stage4-tarballs-made-easy/). 
 
+Chinese Introduction [中文说明](http://liuk.io/blog/gentoo-stage4)
+
 ## Installation
 
 The script can be run directly from its containing folder (and thus, is installed simply by downloading or cloning it from here - and adding run permissions):
@@ -48,11 +50,37 @@ Command line arguments:
   -l: excludes lost+found directory.
   -e: an additional excludes directory (one dir one -e).
   -s: makes tarball of current system.
-  -k: separately save current kernel moudules and src (smaller).
+  -k: separately save current kernel modules and src (smaller & save decompression time).
   -t: makes tarball of system located at the <target-mountpoint>.
   -h: displays help message.
 ```
 
+eg.
+```bash
+liuk@localhost ~/proj/mkstage4 $ sudo ./mkstage4.sh -l -s -k -e /dataA -e /home/liuk/dataZ1/ /dataB/gentoo-stage4-20180511 --exclude=/dataB/* --exclude=/ssd/*
+Are you sure that you want to make a stage 4 tarball of the system
+located under the following directory?
+/
+
+WARNING: since all data is saved by default the user should exclude all
+security- or privacy-related files and directories, which are not
+already excluded by mkstage4 options (such as -c), manually per cmdline.
+example: $ mkstage4.sh -s /my-backup --exclude=/etc/ssh/ssh_host*
+
+COMMAND LINE PREVIEW:
+tar -cjpP --ignore-failed-read --exclude=/home/*/.bash_history --exclude=/dev/* --exclude=/var/tmp/* --exclude=/media/* --exclude=/mnt/*/* --exclude=/proc/* --exclude=/run/* --exclude=/sys/* --exclude=/tmp/* --exclude=/usr/portage/* --exclude=/var/lock/* --exclude=/var/log/* --exclude=/var/run/* --exclude=/dataA --exclude=/home/liuk/dataZ1/ --exclude=/usr/src/*  --exclude=/lib64/modules/*  --exclude=dataB/gentoo-stage4-20180511.tar.bz2 --exclude=lost+found --exclude=/dataB/* --exclude=/ssd/* -f /dataB/gentoo-stage4-20180511.tar.bz2 /*
+
+tar -cjpP --ignore-failed-read -f /dataB/gentoo-stage4-20180511.tar.bz2.ksrc /usr/src/linux-4.16.6-gentoo*
+
+tar -cjpP --ignore-failed-read -f /dataB/gentoo-stage4-20180511.tar.bz2.kmod /lib64/modules/4.16.6-gentoo*
+
+Type "yes" to continue or anything else to quit: yes
+```
+
+### -k separately save current kernel modules and src
+
+  It will save current running kernel modules and src in separate tar file. It save decompression time.
+
 ## Extract Tarball
 
 Tarballs created with mkstage4 can be extracted with:
@@ -61,6 +89,13 @@ Tarballs created with mkstage4 can be extracted with:
 tar xvjpf archive_name.tar.bz2
 ```
 
+If you use -k option, extract src & modules separately
+
+```bash
+tar xvjpf archive_name.tar.bz2.kmod
+tar xvjpf archive_name.tar.bz2.ksrc
+```
+
 ## Dependencies
 
 * **[Bash](https://en.wikipedia.org/wiki/Bash_(Unix_shell))** - in [Portage](http://en.wikipedia.org/wiki/Portage_(software)) as **app-shells/bash**
diff --git a/mkstage4.sh b/mkstage4.sh
index f0adb45..ac9e0d6 100755
--- a/mkstage4.sh
+++ b/mkstage4.sh
@@ -25,9 +25,9 @@ USAGE="usage:\n\
   -c: excludes connman network lists.\n\
   -b: excludes boot directory.\n\
   -l: excludes lost+found directory.\n\
-  -e: an additional excludes directory (one dir one -e).\n\
+  -e: an additional excludes directory (one dir one -e, donot use it with *).\n\
   -s: makes tarball of current system.\n\
-  -k: separately save current kernel moudules and src (smaller).\n\
+  -k: separately save current kernel modules and src (smaller & save decompression time).\n\
   -t: makes tarball of system located at the <target-mountpoint>.\n\
   -h: displays help message."
 
@@ -117,7 +117,7 @@ shift;OPTIONS="$@"
 
 if [ ${S_KERNEL} -eq 1 ]
 then
-  USER_EXCL+=" --exclude=${TARGET}/usr/src/* "
+  USER_EXCL+=" --exclude=${TARGET}usr/src/* "
   if [ ${x86_64} -eq 1 ]
   then
       USER_EXCL+=" --exclude=${TARGET}lib64/modules/* "
@@ -182,6 +182,19 @@ then
   echo ""
   echo "COMMAND LINE PREVIEW:"
   echo "tar $TAR_OPTIONS $EXCLUDES $OPTIONS -f $STAGE4_FILENAME ${TARGET}*"
+  if [ ${S_KERNEL} -eq 1 ]
+  then
+    echo ""
+    echo  "tar $TAR_OPTIONS -f $STAGE4_FILENAME.ksrc ${TARGET}usr/src/linux-$(uname -r)*"
+    if [ ${x86_64} -eq 1 ]
+    then
+        echo ""
+        echo  "tar $TAR_OPTIONS -f $STAGE4_FILENAME.kmod ${TARGET}lib64/modules/$(uname -r)*"
+    else
+        echo ""
+        echo  "tar $TAR_OPTIONS -f $STAGE4_FILENAME.kmod ${TARGET}lib/modules/$(uname -r)*"
+    fi    
+  fi
   echo ""
   echo -n "Type \"yes\" to continue or anything else to quit: "
   read AGREE
@@ -193,12 +206,12 @@ then
   tar $TAR_OPTIONS $EXCLUDES $OPTIONS -f $STAGE4_FILENAME ${TARGET}*
   if [ ${S_KERNEL} -eq 1 ]
   then
-    tar $TAR_OPTIONS $OPTIONS -f ksrc_$STAGE4_FILENAME ${TARGET}usr/src/linux-$(uname -r)*
+    tar $TAR_OPTIONS -f $STAGE4_FILENAME.ksrc ${TARGET}usr/src/linux-$(uname -r)*
     if [ ${x86_64} -eq 1 ]
     then
-        tar $TAR_OPTIONS $OPTIONS -f kmod_$STAGE4_FILENAME ${TARGET}lib64/modules/$(uname -r)*
+        tar $TAR_OPTIONS -f $STAGE4_FILENAME.kmod ${TARGET}lib64/modules/$(uname -r)*
     else
-        tar $TAR_OPTIONS $OPTIONS -f kmod_$STAGE4_FILENAME ${TARGET}lib/modules/$(uname -r)*
+        tar $TAR_OPTIONS -f $STAGE4_FILENAME.kmod ${TARGET}lib/modules/$(uname -r)*
     fi    
     
   fi