Zeng source is pure, according to the relevant historical data to verify, mainly from the si surname, for descendants.Legend emperor shun, feed Gun wife dream job 's-tears, yu, so the emperor shun conferred the yu si surname.According to "the book", "yuanhe surname code" and "surname examination", according to legend Xia Yu 5 of the Sun Shaokang zte after summer room, took his youngest son QuLie sealed in a place called "鄫", in shandong province cangshan county northwest today.Less kang of this children room built 鄫 countries through three generations of xia, shang and zhou about phase for nearly two thousand years, until the spring and autumn period, which was ju in 567 BC.At that time, with the pain of national subjugation prince of wu phraortes fled thence into neighboring lu, and did officer in the lu.Then substitute the original name "鄫" for the surname, after go to city, said leave the city, said zens, generation inherited to the era, have been carried over into today.Zens family for a long time did not have be foreign or physical risk surname record, zeng now Chinese people, is a pulse travels from prince wu, is a learned gentleman Xia Yu, worthy of the name is a four thousand years ago.So, for sharing marriage, zens family always is strictly forbidden.