Which ethnic group is descended from people with six toenails?

The end of the Yuan and the beginning of the Ming Dynasty, due to the perennial war led to the Central Plains region suffered a heavy blow, the land was deserted, and the number of people decreased sharply. Shanxi, on the other hand, was far away from the war and prospered, with a thriving population. Therefore, during the reign of Ming Emperor Zhu Yuanzhang *** through three large-scale population migration, Shanxi people to Henan, Hebei, Shandong, Anhui and other provinces. So there is a folk proverb "ask me where my hometown, Shanxi Hongdong Dahuai tree", this sentence is a reaction to the history of large-scale population migration in the early Ming Dynasty. And in this large-scale population migration process people have a characteristic, is the little toe has two pieces of toenails. Therefore passed down, there are six pieces of toenails of people is that period from Shanxi Hongdong migration out of the people's descendants.