Check the physical sticker on the bottom of your router. It lists the specific default gateway, SSID (initial Wi-Fi name), and any pre-assigned login credentials for your unit. How to Login and Configure Your Router To set up or change your Xiaomi Mi WiFi Router 4C settings, follow these steps: How to find Default username and Password | Xiaomi
If you cannot log in (e.g., you forgot your WiFi password and cannot access the admin panel), reset the router to factory settings. xiaomi mi wifi router 4c default password 2021
If you're looking for the default password for a Xiaomi Mi WiFi Router 4C Check the physical sticker on the bottom of your router