A bit brain-fogged....can someone help me discern this?

Hello!

I am wishing to go to China for a healing retreat on the island of Hainan. I would like to stay there until well, possibly up to 6 months (I know I may need to leave china, and return, perhaps 3 times?

I have chronic fatigue with a lot of brain fog and have a very hard time reading and understanding things online.

Can anyone tell me how I would handle this? What kind of Visa and how do I handle it once there if I have to stay longer than 60 days for healing work?
"work" not meaning work, but meaning being there to heal....receiving healing work.
Thank you!