There are two main factors that lead to the longevity of Hainan people: 1. Living environment. Hainan's environment is indeed in the forefront of the country. Hainan's economy is not good, especially its industry is few. So the environmental pollution is much less than other provinces. And surrounded by the sea, the air is particularly fresh, which is unmatched by other provinces in China. And it's sunny here, unlike the gloomy weather, which makes people feel very comfortable. To put it mildly, life is leisurely, to put it mildly, it is lazy. Men often drink their father's tea and wear slippers. They have many other characteristics, so I won't list them one by one. In short, these characteristics are beneficial to health.