No smoking, smoking in the hotel toilet.

Usually there are sensors in the bathroom of the hotel, so you can't smoke with sensors.

If it is detected and the hotel knows about it, it will be fined.

(I don't know how much the fine is, depending on the hotel regulations, some are very strict and some are fine.

But if you catch it once and punish it once, the loss will be quite serious)

However, some hotels will have smoking rooms, so you can ask the counter first when you check in.

Or the room has a balcony or something, some are not very strict,

But it's safer to ask first,

And smoking is not only allowed in places, but also in many public places outside.

Smoking is completely banned in public places (except for some specially planned smoking areas), and more attention should be paid.