Historically, ysm is essentially a typical southern surnames.Ysm should be in the birthplace of the earliest now shaanxi fengxiang to xianyang area specific information due to a lack of data moving, so difficult to XiangKao.Generally speaking, the more surname Yu Hanshi moved rapidly in anhui province and the area, and developed here.After the han, China southern north yu name is basically all in reproduction, but much less in the north.Yu name is many moved to zhejiang, jiangsu, jiangxi and other places.Wei jin southern and northern dynasties, the family name has become a prominent family in xinan county area.And due to the war in the north, is inevitably a warmth-loving creature, some ethnic surname in hunan, hubei.After the tang dynasty, yu name is growing up rapidly, and formed in south-east two family.Name is move in fujian, guangdong and other places, began in the late tang song.Ming and qing dynasty, and the more, not only has spread all over, jiangnan and across the north more than the name also got rapid development.