After that, it declined slightly, but the magnitude was not great. Until the Song Dynasty, due to foot-binding, environmental changes and the Mongolian invasion of the north, almost all the people were killed, and the height dropped greatly, and in the Ming Dynasty it dropped to about 173. But the Ming people were still taller than the Europeans at that time 168. At that time, some Europeans said in their works that people in the south of China were slightly taller than Europeans, which was enough to explain the problem.
In the Qing dynasty, due to the influence of the massacre and consanguineous marriage. China people's height dropped to the lowest point, northerners 170, Jiangnan people 165- 167, and Fujian Cantonese people 162 (clearly recorded in the works of European ethnologists).