Commandery
Lu 鲁郡Ancestral Commandery
The Zeng Clan: "I Examine Myself Thrice Daily" — the Clan of the Second Sage
Main line: descended from the Si surname, through Yu the Great of Xia. Enfeoffed with the State of Zeng in the Zhou dynasty; when the state fell, descendants dropped the city radical and kept Zeng as their surname.
Multiple origins: the line of descent is relatively singular — a rare major surname with a clear, well-documented origin.
Root point: the ancient State of Zeng in Lanling, Shandong.
▸ Domestic migration: rose in Shandong; crossed south in the Wei–Jin era; moved into Jiangxi, Fujian and eastern Guangdong in the Tang and Song, becoming a core Hakka surname.
▸ Overseas branch: Hakka Zeng went to Nanyang, with an exceptionally strong overseas kinship network.