What are the projects on the first floor of Linyi Blue Ocean International Hotel?

There is a swimming event on the first floor of Linyi Blue Ocean International Hotel. There are few people swimming underground. At night, there are really few people, so you can swim in it. The water is clean, the water temperature is suitable, it is crystal clear, there are no strange floating objects, and there is no strong smell of disinfectant, which is not particularly irritating to the skin. Facilities are complete, there are loungers on the shore, you can come up to have a rest when you are tired of swimming, shampoo, conditioner, bath lotion in the washing room, hair dryer in the lobby, cotton swab hand cream and so on, and there is no need to queue up for hair dryers when there are few people.