1, Bama, Guangxi, with superior geographical location and pleasant environment and climate. The living habits of the people in Bama village are conducive to longevity. Chengmai, Hainan, located in the tropical monsoon climate zone, is hot and humid all the year round and is not suitable for providing for the aged.

2. Bama, Guangxi, quiet and pleasant environment, low consumption, suitable for the elderly, Chengmai, Hainan, is the city center, with a large traffic volume and high noise.