1931年的九一八事变，造成了中华民族空前的民族危机．自大革命失败之后，一度沉寂仿煌的上海资产阶级也随着民族矛盾的急剧上升．从九一八到八一三这一时期，先后发起了一系列爱国民主运动．这既推动了全国抗战高潮的到来，也为抗日民族统一战线的形成起了很大的促进作用．本? The September 18th Incident of 1931 has caused an unprecedented national crisis for the Chinese nation. Since the failure of the Great Revolution, the Shanghai bourgeoisie, once quiet and imitating the Huangshan people, has risen sharply along with the ethnic conflicts. From September 18 to August 13 this period, it has launched a series of patriotic democratic movements. This not only promoted the arrival of the national anti-Japanese war, but also played a significant role in promoting the formation of the anti-Japanese national united front. this?