My wife and I have about 12 days of vacation before she starts a short internship in Shanghai in January.
We are both Americans and don't speak Chinese and this will be our first time in China. Before she starts her internship, we would like to enjoy a relaxing time in warm weather at a resort, near a beach.
Assuming that we are willing to go anywhere in East and South Asia leaving from and coming back to Shanghai during this time, what are some good options for a relaxing vacation in this area in December in relatively warm weather?