diff --git a/README-zh.md b/README-zh.md
index 7c94fe3..323fe8e 100644
--- a/README-zh.md
+++ b/README-zh.md
@@ -19,7 +19,7 @@
 - [重要提示](#重要提示)
 - [关于升级Libreswan](#关于升级libreswan)
 - [问题和反馈](#问题和反馈)
-- [如何卸载](#如何卸载)
+- [卸载说明](#卸载说明)
 - [另见](#另见)
 - [作者](#作者)
 - [授权协议](#授权协议)
@@ -113,7 +113,7 @@ sudo sh vpnsetup.sh
 - Libreswan (IPsec) 的相关问题可在<a href="https://lists.libreswan.org/mailman/listinfo/swan" target="_blank">邮件列表</a>提问。也可以参见这些文章：<a href="https://libreswan.org/wiki/Main_Page" target="_blank">[1]</a> <a href="https://wiki.gentoo.org/wiki/IPsec_L2TP_VPN_server" target="_blank">[2]</a> <a href="https://wiki.archlinux.org/index.php/L2TP/IPsec_VPN_client_setup" target="_blank">[3]</a> <a href="https://help.ubuntu.com/community/L2TPServer" target="_blank">[4]</a> <a href="https://libreswan.org/man/ipsec.conf.5.html" target="_blank">[5]</a>。
 - 如果你发现了一个可重复的程序漏洞，请提交一个 <a href="https://github.com/hwdsl2/setup-ipsec-vpn/issues?q=is%3Aissue" target="_blank">GitHub Issue</a>。
 
-## 如何卸载
+## 卸载说明
 
 请参见 [卸载 VPN](docs/uninstall-zh.md)。
 
diff --git a/README.md b/README.md
index 9921170..d261902 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ We will use <a href="https://libreswan.org/" target="_blank">Libreswan</a> as th
 - [Important Notes](#important-notes)
 - [Upgrading Libreswan](#upgrading-libreswan)
 - [Bugs & Questions](#bugs--questions)
-- [How to Uninstall](#how-to-uninstall)
+- [Uninstallation](#uninstallation)
 - [See Also](#see-also)
 - [Author](#author)
 - [License](#license)
@@ -113,7 +113,7 @@ The additional scripts <a href="extras/vpnupgrade_Libreswan.sh" target="_blank">
 - Ask Libreswan (IPsec) related questions <a href="https://lists.libreswan.org/mailman/listinfo/swan" target="_blank">on the mailing list</a>, or read these articles: <a href="https://libreswan.org/wiki/Main_Page" target="_blank">[1]</a> <a href="https://wiki.gentoo.org/wiki/IPsec_L2TP_VPN_server" target="_blank">[2]</a> <a href="https://wiki.archlinux.org/index.php/L2TP/IPsec_VPN_client_setup" target="_blank">[3]</a> <a href="https://help.ubuntu.com/community/L2TPServer" target="_blank">[4]</a> <a href="https://libreswan.org/man/ipsec.conf.5.html" target="_blank">[5]</a>.
 - If you found a reproducible bug, open a <a href="https://github.com/hwdsl2/setup-ipsec-vpn/issues?q=is%3Aissue" target="_blank">GitHub Issue</a> to submit a bug report.
 
-## How to Uninstall
+## Uninstallation
 
 Please refer to [Uninstall the VPN](docs/uninstall.md).
 
diff --git a/docs/uninstall-zh.md b/docs/uninstall-zh.md
index 63f436d..f637558 100644
--- a/docs/uninstall-zh.md
+++ b/docs/uninstall-zh.md
@@ -11,7 +11,7 @@
 * [第三步](#第三步)
 * [第四步](#第四步)
 * [可选步骤](#可选步骤)
-* [完成后操作](#完成后操作)
+* [操作完成后](#操作完成后)
 
 ## 第一步
 
@@ -37,22 +37,25 @@ rm -f /etc/init.d/ipsec /lib/systemd/system/ipsec.service
 ### Ubuntu/Debian
 
 编辑 `/etc/iptables.rules` 并删除不需要的规则。   
-你以前的防火墙规则（如果有）会备份在 `/etc/iptables.rules.old-date-time`。   
+你以前的防火墙规则（如果有）会备份在 `/etc/iptables.rules.old-日期-时间`。   
 另外如果文件 `/etc/iptables/rules.v4` 存在，请编辑它。   
 如果使用 IPv6 ，还需编辑 `/etc/ip6tables.rules` 和/或 `/etc/iptables/rules.v6`。
 
 ### CentOS/RHEL
 
 编辑 `/etc/sysconfig/iptables` 并删除不需要的规则。   
+你以前的防火墙规则（如果有）会备份在 `/etc/sysconfig/iptables.old-日期-时间`。   
 如果使用 IPv6 ，还需编辑 `/etc/sysconfig/ip6tables`。
 
 ## 第四步
 
 编辑 `/etc/sysctl.conf` 并删除该标记后面的行： `# Added by hwdsl2 VPN script`。   
-编辑 `/etc/rc.local` 并删除该标记后面的行： `# Added by hwdsl2 VPN script`。*不要删除 `exit 0` （如果有）*。
+编辑 `/etc/rc.local` 并删除该标记后面的行： `# Added by hwdsl2 VPN script`。\*不要\* 删除 `exit 0` （如果有）。
 
 ## 可选步骤
 
+注： 这一步是可选的。
+
 删除这些配置文件：
 
 * /etc/ipsec.conf
@@ -60,18 +63,18 @@ rm -f /etc/init.d/ipsec /lib/systemd/system/ipsec.service
 * /etc/xl2tpd/xl2tpd.conf
 * /etc/ppp/options.xl2tpd
 * /etc/ppp/chap-secrets
-* /etc/ipsec.d/*
 * /etc/pam.d/pluto
 * /etc/sysconfig/pluto
+* /etc/ipsec.d (目录)
 
 要快速删除，可以复制并粘贴以下命令：
 
-`rm -f /etc/ipsec.conf /etc/ipsec.secrets /etc/xl2tpd/xl2tpd.conf /etc/ppp/options.xl2tpd /etc/ppp/chap-secrets /etc/ipsec.d/* /etc/pam.d/pluto /etc/sysconfig/pluto`
+```
+rm -f /etc/ipsec.conf /etc/ipsec.secrets /etc/xl2tpd/xl2tpd.conf /etc/ppp/options.xl2tpd \
+      /etc/ppp/chap-secrets /etc/pam.d/pluto /etc/sysconfig/pluto
+rm -rf /etc/ipsec.d
+```
 
-删除 Libreswan 源目录：
-
-`rm -rf /opt/src/libreswan-*`
-
-## 完成后操作
+## 操作完成后
 
 重启你的服务器。
diff --git a/docs/uninstall.md b/docs/uninstall.md
index 7462f91..bb2adab 100644
--- a/docs/uninstall.md
+++ b/docs/uninstall.md
@@ -44,15 +44,18 @@ If using IPv6, also edit `/etc/ip6tables.rules` and/or `/etc/iptables/rules.v6`.
 ### CentOS/RHEL
 
 Edit `/etc/sysconfig/iptables` and remove unneeded rules.   
+Your original rules (if any) are backed up as `/etc/sysconfig/iptables.old-date-time`.   
 If using IPv6, also edit `/etc/sysconfig/ip6tables`.
 
 ## Fourth step
 
 Edit `/etc/sysctl.conf` and remove the lines after `# Added by hwdsl2 VPN script`.   
-Edit `/etc/rc.local` and remove the lines after `# Added by hwdsl2 VPN script`, *except exit 0 (if any)*.
+Edit `/etc/rc.local` and remove the lines after `# Added by hwdsl2 VPN script`. DO NOT remove `exit 0` (if any).
 
 ## Optional
 
+Note: This step is optional.
+
 Remove these config files:
 
 * /etc/ipsec.conf
@@ -60,17 +63,17 @@ Remove these config files:
 * /etc/xl2tpd/xl2tpd.conf
 * /etc/ppp/options.xl2tpd
 * /etc/ppp/chap-secrets
-* /etc/ipsec.d/*
 * /etc/pam.d/pluto
 * /etc/sysconfig/pluto
+* /etc/ipsec.d (directory)
 
 Copy and paste for fast removal:
 
-`rm -f /etc/ipsec.conf /etc/ipsec.secrets /etc/xl2tpd/xl2tpd.conf /etc/ppp/options.xl2tpd /etc/ppp/chap-secrets /etc/ipsec.d/* /etc/pam.d/pluto /etc/sysconfig/pluto`
-
-Remove Libreswan source directory:
-
-`rm -rf /opt/src/libreswan-*`
+```
+rm -f /etc/ipsec.conf /etc/ipsec.secrets /etc/xl2tpd/xl2tpd.conf /etc/ppp/options.xl2tpd \
+      /etc/ppp/chap-secrets /etc/pam.d/pluto /etc/sysconfig/pluto
+rm -rf /etc/ipsec.d
+```
 
 ## When finished