Is it true that Shanghai rents a bed for a day in 20 yuan?

There are many such daily rental houses in Shanghai. Because of the increasing group rent, the number of international students coming to Shanghai has not decreased. Therefore, on the whole, they pay more and more daily rent, but the daily rent is becoming more and more expensive. It will be cheaper if you sign one. 20 yuan is generally not fake, but it is genuine. General deposit 100 yuan. Agree in advance how long the rent will be, but if you sign it, you won't be deducted.