China DOS Union

I saw some articles on the Internet about setting the GRUB boot password, but no matter how I set it, it didn't work.
I wrote it like this:
default 2
timeout 5
color green/black light-gray/blue

title Rescue Windows XP Environment
password=123456
lock
find --set-root /ldrxpe
chainloader /ldrxpe
boot
After restarting, when entering GRUB boot, there is no prompt to enter the password. Does this actually have any effect?

I used md5 to generate the password, but the password was always incorrect:
I did it like this:
grub> md5crypt
password:123456
$1$7uDL20$eSB.XRPG2A2Fv8AeH56nYI

After writing down "$1$7uDL20$eSB.XRPG2A2Fv8AeH56nYI", I re-entered and typed it in menu.lst under Windows. I wrote it like this:

default 2
timeout 5
color green/black light-gray/blue

title Rescue Windows XP Environment
password --md5 $1$7uDL20$eSB.XRPG2A2Fv8AeH56nYI
lock
find --set-root /ldrxpe
chainloader /ldrxpe
boot

After saving, when entering GRUB boot, it always prompts that the password is incorrect when entering "Rescue Windows XP Environment"?
Why is that? What else do I need to do to make it correct?

Incorrect usage, please refer to the official documentation.

You can also refer to my "grub4dos Beginner's Tutorial"

Specifically how to write, can you write an example for me? I have read many, all are incorrect, where did I go wrong, I can correct it.

"grub4dos初级教程" has specific usage and examples. Don't be too eager for quick success, heh. Be good at learning.

Since you only want the result, just search the following article online.
How to add a password to the GRUB system boot manager

Hehe, I'm a newbie. Thanks for everyone's help and guidance