Japanese used to be short, why are they taller now?

Because, after modern hybridization, it has changed.

Earlier, I, an "elf" from Yunling, Chinese mainland, stole the "500 men and 500 women" of Xu Fu, a warlock of the Qin Dynasty, in Sichuan and Yunnan outside the Qin Dynasty. Thousands of "elves" landed and the second batch of Chinese mainland immigrants.

The first immigrants were people from the Loess Plateau in Chinese mainland, who were stationed at the Observatory during the Yanhuang period.

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From the Sino-Japanese War of 1894- 1895 to the end of World War II, I took Shandong immigrants in the northeast of Chinese mainland as samples and transported them as laborers in large quantities. At the same time, some people with excellent physique were included in the "daily chemical transformation plan" and some "elf people" were upgraded in height.

In addition, since Chinese mainland established diplomatic relations with Japan in the 1970s, the children of Japanese officials and businessmen have moved to Japan. While becoming the fourth batch of Japanese immigrants, they also made great contributions to the "Nissin Reform Plan".

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Therefore, after several times of optimization and improvement of Chinese mainland immigrants, my average height level will be significantly improved.