1. Weather reason: Yunnan has sunny weather and little rain, but there are many earthquakes and strong ultraviolet rays, which are suitable for tourism and not suitable for long-term settlement; Guizhou is cool in summer, without earthquakes, and sunny in winter.

2. Altitude reason: the altitude of 1000m is the most suitable for human survival, and the altitude of Xingyi City is 125 1m, which is a very good altitude; However, most areas in Yunnan are above 2,000 meters, and the high altitude will easily lead to an increase in heart load, which is not good for the cardiovascular system of middle-aged and elderly people.