A comprehensive investigation in field work to the China’s Northwest, named“The Sino-Swedish Scientific Expedition to the North-Western Province of China”, which span six years and covers Inner Mongolia, Gansu, Xinjiang, Ningxia and Qinghai, etc, had been conducted in the 20 or 30s of the 20th century, between China and Sweden. The contents of the investigation includes geology, paleontology, archaeology, meteorology, hydrology, history, cultures and customs, etc. Many great achievements had been made, accumulated vast first-hand basic data, greatly promoted the modernization of our country’s science and technology, enhanced the academic cooperation and exchanges and friendship and between China and Sweden, exercised and cultivated scientific talents for China.
Guo Lianjie He Jing. A great expedition in Chinese scientific history: Commemorating to the ninetieth anniversary of “The Sino-Swedish Scientific Expedition to the North-Western Province of China”[J]. Chinese Journal of Geology, 2017, 52(4): 1411-1435.