1963, Elizabeth Sterenberg, The Role of Forced Labor in Economic Development[1], University of Chicago, →OCLC, page 220:
In Shensi, adult males between 18 and 50 had to serve ten days for road building and three for planting trees; in Shantung they built roads and dug canals; in Tzu-yang county peasants who lived nearby and owned two mou or a multiple thereof were mobilized for road building.
An extreme example is provided by Tzu-yang county, in Shensi, one of the poorest regions, the annual tax return of which was 341 piculs of grain, less than one-thousandth of Shanghai's.
1981, Chinese Studies in History[3], volume 15, International Arts and Sciences Press, →ISSN, →OCLC, pages 45–46:
[...]from here medicine and tea leaves produced in the mountains flowed downstream to Jen-ho k'ou in Tzu-yang, Shensi, a distance of 360 li, where it joined the Han River to reach Hsiang-yang.
1965, Will David Phillips, Food Sources in China, Manchuria, and Mongolia During Prehistoric Times[4], →OCLC, page 34:
The Upper Paleolithic period has been rather well documented for several parts of China, namely Hwang-shan-hsi in Tzu-yang in Szechuan, the Upper Cave at Chou-K'ou-Tien, the Kuang-hsi Cave at Lai-pin in South China, and the[...]
The three southern fossils were in various stages of development, with Liu-chiang Man from Kwangsi as the oldest, followed by Tzu-yang Man from Szechwan (cf. 2, 57-58) and Lai-pin Man also from Kwangsi in chronological order.[...]The Tzu-yang Man is represented by a very complete skull which bears some resemblance to Homo erectus on the one hand and Homo sapiens on the other, forming a link between the two widely different stages of Chou-k'ou-tien.[...]Pebble and flake chopping-tools were used and occasionally, as at Tzu-yang, a triangular bone splint was scraped into a point which became blunt and polished through long usage.
He further claimed to be able to trace Mongoloid evolution from Peking Man through a series of Chinese Middle and Upper Pleistocene fossils, including the early sapiens forms of Mongoloid type represented by the Upper Pleistocene skulls from Tzu-yang, Szechwan, and Liu-chiang, Kwangsi⁸⁴.
