diff --git a/FAQ.md b/FAQ.md
index f30c0a0..bdb1eb8 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -14,4 +14,19 @@ antigen boundle skywind3000/z.lua
 antigen boundle changyuheng/fz
 
 function _z() { _zlua "$@"; }
-```
\ No newline at end of file
+```
+
+## Use `z` as `cd`
+
+Paste this script in your `.bashrc` / `.zshrc`:
+```bash
+function j() {
+    if [[ "$argv[1]" == "-"* ]]; then
+        z "$@"
+    else
+        cd "$@" 2> /dev/null || z "$@"
+    fi
+}
+```
+
+When you are using `j xxx` it will first try `cd xxx` and then `z xxx` if cd failed.