Is there any allusion to the split little finger of human foot?

This is really an allusion. It is said that the Ming Dynasty established political power. Due to years of war. Anhui, Hunan, Hubei, Shandong, Hebei and other regions are sparsely populated. Xu Da offered advice and a large number of immigrants. Start with mobilization. But farmers can't leave their homes. Reluctant to move. Most immigrants come from Shanxi. Xu Da began to force immigrants. There is a big pagoda tree in Hongtong County, Shanxi Province. It is a transit point for immigrants. Tie people up with ropes and forcibly escort them back to the mainland. But many people have deep feelings for their hometown and will sneak back. What shall we do? Xu Da has an idea. Cut each immigrant's left little toe with a knife. So their offspring are also related to heredity. In addition, in the process of escort, what should immigrants do if they want convenience? He would say "call it quits". The escorted official knew that he wanted to be convenient. Therefore, the expression "Jieshou" has been passed down in the Central Plains. In the process of long-term care, my hands were tied behind my back, so after I arrived at my new home, in my spare time every day. They always walk with their hands behind their backs, which is a habit. Their descendants naturally form habits because of long-term contact. Now many people in Northeast China are from Shandong. So, some people have this habit.