1931年九一八事变后,日军侵占东北。1932年1月日本海军图谋侵占上海,先在虹口天通庵等地制造事变,由日本领事提出不准抗日等无理条件,步步进逼,上海市政府在蒋介石的指示下步步退让,全部接受日方条件。日军仍按原定计划于1月28日纠集海军陆战队向闸北进攻,遂酿成“一·二八”事变。 After the September 18 Incident of 1931, the Japanese army invaded the northeast. In January 1932, the Japanese navy plotted to encroach on Shanghai by first creating an incident in Tian Tong, Hongkou and other places. The Japanese consuls proposed that they should not be allowed to resist Japan and other unreasonable conditions. At the next step, the Shanghai municipal government gave in all directions at the instructions of Chiang Kai-shek. Accept Japanese conditions. The Japanese army still planned to muster the marines on January 28 to attack Zhabei on the original plan, which led to the “January 28 Incident”.