[1971, Jaroslav Průšek, Chinese Statelets and the Northern Barbarians in the Period 1400-300 B.C., →OCLC, page 152:
Not far from the Lu , in what is now Tun-liu district (12), the Liu-yü settled (13). The old town of Tun-liu, still reminding us of their name, lay further south than the present town of that name, and was already mentioned in the Han geography (Han-shu ch. 28 A, p. 44b).]
Further investigation showed that Ch’en’s wife’s home served as the liaison station for Kuomintang agents in Tunliu County, part of a network of stations leading from Southeast Shansi down into Honan.
The masses were mobilized not only to perform typical activities that are part of agricultural production, but also unusual ones such as killing sparrows and rats that were reportedly competing with humans for food. For instance, in 1958, the people of Tunliu County in Shanxi Province were determined to kill all sparrows and rats within their territory.