There are three origins of sim:

1, from ji, based on the family name, is the seed of the yellow emperor.Shen is the ancient name, the first is the seal of the people of countries.Week, after the death of king wu of zhou, acceded to the throne by the young king cheng of zhou, ji Dan (4) the king of the regent.Three refuses, and Wu Geng (son of the shang king zhou) collusion, joint Oriental YiZu rebellion, is destroyed by the duke of zhou.King wen of zhou's tenth season load, because of counter-insurgency, duke of zhou presented as common, the king of the erros into season will be his uncle wang to Shen Guo, also known as Dan kingdom.Season is also called RanJi load.Dan writing ran again, in ancient times, jean valjean, shen pronunciation is the same.Spring and autumn period, by CAI Shen Guo, season after their son to escape chu, followed by sons hence the surname name command, said shen.

2, from Mi surname, is ZhuanXu emperor's descendants.In the spring and autumn, the son of king zhuang of chu sun zhen sealed in Shen Yi, hence the surname principality's name, called sim.

3, from little HaoJin day's, to China's.Less HaoJin day after the sun sets Chinese ostrich's someone's descent to establish Shen Guo, spring and autumn period, as the state of jin, hence to Shen Weishi.