1. Hemei Agreement: 1935, the Japanese Kwantung Army entered the customs in large numbers, threatening Peiping and Tianjin. What did the National Government send to negotiate and sign an agreement with the commander of the North China garrison? The main content is that the Central Army will withdraw from Hebei Province and prohibit all anti-Japanese activities. The crisis in North China has become increasingly serious.

2. "Five Provinces Autonomy Movement in North China": After the signing of the Japan-US agreement, Japan planned "Five Provinces Autonomy in North China" in an attempt to turn North China into a second "Manchukuo". The national government adopted the policy of adapting to Japan's "specialization of North China regime", which made the political economy of North China increasingly colonized and the national crisis deepened.

In a secret telegram to Kwantung Army, Takaji Matsumura, head of the Japanese secret service in Peiping, said: "On September 8,193/kloc-0, the Manchuria Incident was launched and occupied, and the imperial market and raw materials eased slightly for a while ... Now the Manchuria market is saturated, and it is difficult to expand in a short time, that is, it cannot be reconciled with the improvement of imperial productivity.