Is Hainan University Gym free?

No, according to official website of Hainan University, the gym charges 10 yuan every time, as well as swimming pools and table tennis courts. Hainan University, referred to as Haida for short, is located in Haikou City, Hainan Province. It is a university jointly established by the Ministry of Education and the People's Government of Hainan Province, and jointly established by the People's Government of Hainan Province and the Ministry of Finance. It is a comprehensive key university in Hainan Province and a key university supported by the construction of "domestic first-class university" in Hainan Province.