Why are Lanzhou people so tall?

Because Lanzhou is an immigrant city, its blood is more diverse.

1 is generally higher in northerners, which is related to various factors such as geographical factors and eating habits.

2. The relevant departments have investigated 28 cities in China, and found that the growth and development of teenagers are greatly influenced by local topography, soil, altitude and other natural environmental factors. According to research, in some high-lying areas, due to the change of atmospheric pressure, the oxygen content is low, and long-term hypoxia will affect the development of bones and muscles.