What does Hainan's three districts and one center mean?

Hainan's three districts refer to the experimental zone of comprehensively deepening reform and opening up, the national ecological civilization experimental zone and the national major strategic service guarantee zone. "One center" refers to the international tourism consumption center. The strategic orientation of Hainan's comprehensive deepening of reform and opening up is "three districts and one center", which is also the basis for Hainan's development of health industry. A good ecological environment is the most important resource for developing a healthy industry. Building an international tourism consumption center is the only way to develop a healthy industry. Perfecting the maritime rescue system and serving the South China Sea is the proper meaning of the development of Hainan's health industry.