It's highly recommended to change the default password to ensure the security of your router and network. Here's how to do it:
If a user attempted to log into a brand-new, out-of-the-box Xiaomi Router 4C in 2021, the process was:
If you are looking for a "2021 default password" because you believe the firmware updated to a specific code, this is a misconception. The password is always user-defined.