On this day, 87 years ago, on January 10, 1938 (December 9, 1937 in the lunar calendar), Japanese troops landed in Qingdao. On August 23, 1914, the Japan-German War broke out on the Jiaodong Peninsula. On September 2, the main Japanese army landed at Longkou and attacked Qingdao. On November 7, the German army stationed in Qingdao surrendered to the Japanese army. On the 11th, the Japanese army entered the city of Qingdao. It was the beginning of Japan's first invasion of Qingdao. On May 9, 1915, Japan forced Yuan Shikai to sign the "Twenty-one Articles", triggering the "Five. 4 "Movement. On February 4, 1922, China and Japan signed the "Treaty on the Settlement of Outstanding Cases in Shandong" and its annexes. At the end of the year, the Japanese and Japanese troops withdrew, and the China government regained sovereignty over Qingdao. In August 1937, the Japanese army created the "Dexian Road Incident" in order to cause trouble, which intensified tensions in Qingdao. At the same time, the Japanese government repeatedly ordered its Consul in Qingdao, Xi Chunyan, to conduct secret negotiations with Shen Honglie, Commander of the Third Fleet of the National Revolutionary Army and Mayor of Qingdao City, using both soft and hard methods to induce him to surrender to Japan, but was severely rejected. Seeing that the Japanese government failed, it prepared to attack with force and made preparations for imminent battle. On August 13, 1937, Japan closed its consulate in Qingdao and began evacuating Japanese nationals. On August 31, all more than 20,000 Japanese expatriates in Qingdao returned home, and the factories, shops, etc. they opened were closed. As the Japanese army was about to launch a war to occupy Qingdao, on October 1, Chiang Kai-shek appointed Shen Honglie as the commander-in-chief of the Qingdao Army and Navy to implement the "Scorched Earth Anti-Japanese War" plan. On December 4, Chiang Kai-shek telegraphed Shen Honglie to implement a policy of non-resistance and wait for an opportunity to evacuate Qingdao and prepare to withdraw to the Zhongshan Area of Shandong. On December 18, Shen Honglie ordered the bombing of nine major yarn factories invested and operated by Japan in Qingdao, and also damaged facilities such as power plants, breweries, waterworks and port docks. On December 25, Shen also ordered that seven warships including the "Zhenhai" anchored in Qingdao Port and five small fireboats including the "Flying Whale" of the Port Authority be loaded with sand and gravel and sunk in the channel from Dagang to Xiaogang. On December 26, Japan announced a blockade of traffic off Qingdao. On the 27th, Shen Honglie led nearly 10,000 troops, party and government agencies, and family members to retreat to southwest Shandong. At 9 a.m. on January 10, 1938, the Japanese Navy's Second Fleet and some Marine Corps, under the cover of aircraft, landed from Shandong Tau, Zhanshan Village and Huiquan Bay respectively. On January 14, the vanguard echelon of the Kunisaki Detachment of the Second Army of the North China Front Army and the Fourth Navy Fleet successively occupied Qingdao. Qingdao fell again and became a colony of Japanese imperialism for the second time.