Johan Gunnar Andersson (1874-1960) was a 40-year-old Swedish geologist in 1914 when he was invited to become a Mining Advisor to the Chinese government and its ministry for agriculture and commerce. His career took a sharp turn after he met Ding Wenjiang (1887-1936), the Chinese scientist, intellectual and politician of the newly established Chinese republic. Together, they wou...(展开全部)