I would like to ask, do tour groups of travel agencies also need one person and one permit to stay in hotels? What if I don't bring it?

It depends on the hotel. Generally, one room and one card is enough for a budget hotel. Four-star and five-star hotels generally need ID cards. Most hotels need ID cards, and some don't. However, some five-star hotels are more expensive in self-service, and you can get some breakfast coupons by swiping a few ID cards, so you'd better take them with you when you go out. Have a nice trip!