After the tablet got slightly wet in rain water, a problem like a water mark/shade appeared on the display. The shade seen in the picture is currently on the display.
However, the display is working completely—touch, brightness, and other functions are running normally. The tablet has been taken to the Xiaomi Store and checked. According to their check, there are no other issues with the tablet except for that display shade.
Only the camera is currently not turning on/working. Everything else can be used normally.
I am mentioning the issues clearly without hiding them, so that the buyer can take the tablet knowing the matter. If interested, you can see and check it directly.