The Tan (谭) Surname: From an Ancient State of Shandong to the Wuyi Diaspora
In the winter of 684 BCE, an army of the State of Qi marched against its small neighbor and erased it from the map. The State of Tan (谭国, Tán Guó) — a minor polity in today's Zhangqiu, Shandong, whose old…