Only the largest mines, oil fields, or factories, such as the Anshan iron and steel complex in Liaoning Province or the Yanshan petrochemical complex in Beijing, had their own research units, dedicated to solving immediate problems in production in the late 1980s.
The Yanshanian movement were first recognized by Weng WH (1927,1929) in the Yanshan area, 116°-119.5°N, 40°-42°E.
Yanshan |