Is there a camera like a hotel on the board?

Generally speaking, hotels will not install cameras in rooms to spy on guests' privacy, which is immoral and not allowed by law. Although science and technology are constantly improving and there are many kinds of miniature invisible cameras, our human society is bound by morality and law after all, and we should also treat social affairs with a sunny attitude. Don't generalize just because such a thing happened. After all, there are more law-abiding people than evil people.