On this day, 89 years ago, August 25, 1936 (July 9, 1936 in the lunar calendar), the Communist Party of China sent a letter to the Kuomintang advocating a second cooperation. Some leaders of the Central Committee of the Communist Party of China (from left): Mao Zedong, Zhu De, Zhou Enlai, Bo Gu. On August 25, 1936, the Central Committee of the Communist Party of China issued a letter addressed to the Central Committee of the Kuomintang of China and forwarded it to all members of the Kuomintang. The Central Committee of the Communist Party of China expressed its welcome for the progress shown by Chiang Kai-shek in his speech at the Second Plenary Session of the Kuomintang. At the same time, it pointed out that Chiang was "still unwilling to propose the task of organizing the anti-Japanese united front and still refused to immediately launch the sacred anti-Japanese war." It also clearly proposed that under the general goal of resisting Japan, the Kuomintang and the Communist Party should implement a second cooperation and announced: "We support the establishment of a unified democratic republic for all of China, the convening of a parliament elected by universal suffrage, the Anti-Japanese and National Salvation Congress of the people and the Anti-Japanese Army of the whole country, and the National Defense Government." We are prepared to send our own representatives anywhere and at any time to negotiate with the Kuomintang plenipotentiary representatives, with a view to quickly concluding a specific agreement on resisting Japan and saving the country. After the letter from the Central Committee of the Communist Party of China to the Kuomintang was issued, Mao Zedong, Zhou Enlai and others successively wrote to Soong Ching Ling, Cai Tingkai, Yu Xuezhong, Fu Zuoyi, Xu Deheng, Chen Gongpei, Feng Yuxiang, Chen Guofu, Chen Lifu, Hu Zongnan and others, asking them to read this letter, and hoping that they would use their wealth or status to actively respond, promote the cessation of the civil war, unite with the outside world, and realize the second cooperation between the Kuomintang and the Communist Party. In August 1937, during the peace negotiations between the Kuomintang and the Communist Party of China, this photo was taken in the courtyard of Huangzhai in Nanjing. (From right: Zhu De, Zhou Enlai, Huang Qixiang, Guo Xiuyi, Ye Jianying, Zhang Qun)