Why are Northeasters so beautiful?

Due to internal mixed-race, there have been many great immigrants in history, the most recent one was during the period of crossing the Kanto, and the main battlefield for Japanese to enter China was also the Northeast. There are descendants of the Japanese here instead of maliciously slandering the Northeast. Just to illustrate this situation. Half-blood is bound to produce beautiful women, just like Chengdu. The two great immigrants, Song and Qing, basically moved from inland or Jiangxi to Chengdu.