On this day, 93 years ago, on February 2, 1932 (December 26, 1931, the Nanjing government secretly ordered the Navy and Air Force not to cooperate with the 19th Route Army in combat. China Air Force was actively preparing for war, but no aircraft could take off without orders. On February 2, 1932, the National Government ordered that the Navy and Air Force be prohibited from cooperating with the 19th Route Army in combat. It secretly ordered the Navy: "The commander of the Japanese Navy sent a letter: 'This operation is not a battle. If the China Navy does not attack Japanese warships, and the Japanese warships will not attack China warships, in order to maintain friendship.' All our fleet should remain calm. Therefore, the Japanese transport ship ran aground in Bailong Port for three days, but the China navy did not bombard it to "maintain friendship." When the 19th Route Army and the Japanese army were in a bloody battle, Li Shijia, the Vice Chief of the Navy, and Nomura, the Japanese commander, rode in a car to visit various trenches, looking at them without any fear. On February 5, He Yingqin sent an urgent telegram to Jiang Guangnai and Cai Yankai: The air force originally assigned to the 19th Route Army would "never throw bombs at the Japanese Navy except to resist Japanese aircraft!" On February 12, He Yingqin issued a strict order to the 19th Route Army: "When Japanese warships or troops are not attacking us, we are not allowed to fire bullets to avoid corruption in the southern city. In this way, Japanese naval ships in the Yangtze River estuary and Huangpu River could act at will, and Japanese aircraft could fly freely in the battlefield to support other ground and army operations.