On the second day after the incident, the China Production Party sent a telegram to the whole country, calling: "Ping Jin is in danger! North China is at stake! The Chinese nation is in danger! " It is pointed out that "only the whole nation can fight against Japan, which is our way out." Under the call of China's * * * production party, anti-Japanese national salvation movements are surging all over the country. Workers, peasants and patriots from all walks of life actively support the anti-Japanese front line in various ways, such as fundraising, labor and publicity.

However, the Kuomintang government pursued a passive anti-Japanese war line. Faced with the large-scale attack of the Japanese army, they dared not mobilize the people and hesitated, which led to the fall of Beijing and Tianjin at the end of July.

Due to the pressure of the people all over the country demanding the war of resistance, and the Japanese invasion seriously damaged the interests of Britain and the United States in China, which directly threatened the rule of Chiang Kai-shek and other four families, the Kuomintang government was forced to publish the Declaration of Self-Defense in mid-August to start the war of resistance, and accepted the idea of establishing an anti-Japanese national United front put forward by the Producers' Party of China.