There is a "Oubao Hotel" on the No. 1 island of Haihua Island in Zhangzhou City, Hainan Province. According to reports: Oubao Hotel has 5,21 rooms, which can accommodate 10,000 tourists at the same time, and is ranked in the forefront of Asian single hotels. The hotel is connected by four European castles, including forests, oceans, deserts and glaciers. Each castle is in a "Y" shape, with a beautiful combination of plane and site vertical, giving each room a great view. Of the hotels I have stayed in, the Oubao Hotel is the most visited hotel.