これか
[ROM][UNOFFICIAL][8.1][clover]Mokee81.0
https://forum.xda-developers.com/mi-pad-4/how-to/rom-mokee81-0-t3834402

[ROM] 【LR.Team】小米平板4(plus)专版TWRP-3.2.3-0930中英文修改优化版
http://www.miui.com/thread-16375014-1-1.html