To change your password on WeChat, follow these steps:
1. Open the WeChat app on your device.
2. Tap on "Me" or your profile icon at the bottom right corner of the screen.
3. Go to "Settings" and then select "Account Security."
4. Tap on "Password" and then choose "Change Password."
5. Enter your current password and then create a new password.
6. Confirm the new password and save the changes.
Your password on WeChat has now been successfully changed.