Why do hotels have steel pipes?

Some hotels have four steel pipes around their beds to hang mosquito nets. The hotel will be equipped with mosquito-repellent incense tablets and mosquito-repellent incense liquid, but if you are sensitive to these smells and can't stand the buzzing of mosquitoes at night, you can choose a bed with mosquito nets.

Generally speaking, a hotel is a place where guests can stay and eat. Specifically, a hotel is an organization that provides services to its guests through the sale of rooms, restaurants and comprehensive service facilities, taking its buildings as evidence, so as to obtain economic benefits. The hotel mainly provides accommodation services, living services and facilities, bedtime services, catering, games, entertainment, shopping, business centers, banquets and conferences for tourists.