1936 October 28, “Resident Deputy of French F. O.”, in North-China Herald[1], volume CCI, number 3612, Shanghai, →OCLC, page 228, column 3:
Salt Works Close Hundreds of thousands of workers are report unemployed as a result of the recent closing of the Chengkou saltworks, on the Shensi border of northeast Szechuen, which, closing, many believe, was deliberately engineered by the Kaihsien salt Producers, who were desirous of cornering that market. The trouble is aggravated by the Government's order that only salt produced in Kaihsien is to be sold in Chengkou. Decidedly angry at the state of affairs, the residents of Chengkou have declared that rather than buy Kaihsien salt, they would go without any salt.
1948, Bulletin of the Institute of Geophysics[2], volumes 28-29, →ISSN, →OCLC, page 11:
Near the SW of Chengkou, between the Pagoda limestone and the Yangsin limestone are yellow and green shales with subordinate limestone layers , according to the oral information of Dr. C. Y. Lee who observed within the sequence a
Zhu Zhao-ling and others (1977) report a section at Chengkou County, northeastern Sichuan, and Ni Yu-nan (1978) revised the graptolite zones of the type Lungmachi Formation.
2022 May 18, “Bus falls into river ditch in southwest China”, in huaxia, editor, Xinhua News Agency[4], archived from the original on 15 June 2022:
A bus fell into a river ditch in Miaoba Township, Chengkou County, southwest China's Chongqing Municipality, Wednesday, local authorities said.
