diff --git a/README.cn.md b/README.cn.md
index 3f6ec51..a0829d6 100644
--- a/README.cn.md
+++ b/README.cn.md
@@ -264,7 +264,7 @@ PS：你可以使用 `$_ZL_FZF` 环境变量来精确指明 fzf 的可执行路
 `"-b"` 选项可以快速回到某一级父目录，避免重复的输入 "cd ../../.."。
 
 - **(没有参数)**：`cd` 到项目根目录，即跳转到父目录中包含 (.git/.svn/.hg) 的地方。
-- **(单个参数)**：`cd` 到离当前目录最近的以关键字开头的父目录。
+- **(单个参数)**：`cd` 到离当前目录最近的以关键字开头的父目录，如果找不到就尝试跳到包含关键字的父目录。
 - **(两个参数)**：将当前路径中的第一个关键词替换为第二个关键词。
 
 为了使用简便，我们继续将 `z -b` 取个别名成 `zb`：
diff --git a/README.md b/README.md
index 2b52011..ac8fbb8 100644
--- a/README.md
+++ b/README.md
@@ -283,7 +283,7 @@ NOTE: For fish shell, this feature requires fish 2.7.0 or above. You can specify
 New option `"-b"` can quickly go back to a specific parent directory in bash instead of typing "cd ../../.." redundantly.
 
 - **(No argument)**: `cd` into the project root, the project root is one of the parent directory with `.git`/`.hg`/`.svn` in it
-- **(One argument)**: `cd` into the closest parent having its name begin with the keyword you passed in.
+- **(One argument)**: `cd` into the closest parent starting with keyword, if not find, goto the parent containing keywords.
 - **(Two arguments)**: replace the first value with the second one (in the current path).
 
 Let's start by aliasing `z -b` to `zb`: