Huawei devices require a 16-digit unlock code. Since official channels are closed, you must use one of these methods:

This free, open-source tool allows you to unlock the bootloader by physically shorting a "test point" on the motherboard while connecting it to a PC. You will need to disassemble the tablet to reach the points behind the motherboard.

Some users have had success using paid tools like DC-Unlocker or Ministry of Solutions to obtain codes.

Assuming you have already unlocked your bootloader and installed TWRP (version 3.5.2+), follow this skeleton guide:

Warning: Rooting and flashing your device carries the risk of bricking. Back up all data before proceeding. This process requires an unlocked bootloader.

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