Zhang Hongyi，the pioneer of earthquake scientific investigation in the Republic of China

In the middle of January 1914, Zhang Hongyi received the No. 4 order issued by the Yunnan Provincial Administrative Office, to make an investigation on Xi’e earthquake-stricken area. Zhang Hongyi submitted a report at the late of the month. In the report he described that it was a subsidence earthquake, non-volcanic and non-fault involved, and put forward a set of both practical and scientific countermeasures to deal with the aftermath. Zhang Hongyi was the first geologist who went deep into the earthquake-stricken area in modern China to carry out scientific investigation. His report was the first special investigation report on earthquake in modern China, which indicates that Chinese scholars have taken earthquakes as the research object of geology, and started the earthquake scientific research, is worthy forever remembered by history.