What is the pool next to the toilet in the hotel bathroom?

This is called a purifier.

Squatting there, there is a water faucet with a water pipe. You can hold it separately or flush it directly.

It’s just for washing your butt.

It was invented by the French.

Because the French don’t like bathing the most, they discovered bathroom purifiers and perfume. Haha...

Now in China, it is generally equipped in five-star hotels.