For xiaomi eu and all roms. You can change watermark cc9 pro.
You need root and a root file manager(i use es file manager)
All files png copy and paste in folder Data/Data/com.android.camera/Files
https://drive.google.com/file/d/1-0KXOZsYc3O6o4GmsvUvqjsVWEINPRkR/view