The Tanggu Truce, sometimes called the , was a ceasefire that was signed between the Republic of China and the Empire of Japan in Tanggu District, Tianjin, on May 31, 1933. It formally ended the Japanese invasion of Manchuria, which had begun in 1931. Background After the Mukden Incident of September 18, 1931, the Japanese Kwantung Army invaded Manchuria and, by February 1932, it had captured the entire region. The last emperor of the Qing dynasty, Puyi, who was living in exile in the Foreign Concessions in Tianjin, was convinced by the Japanese to accept the throne of the new Empire of Manchukuo, which remained under the control of the Imperial Japanese Army. In January 1933, to secure Manchukuo's southern borders, a joint Japanese and Manchukuo force invaded Rehe. After conquering that province by March, it drove the remaining Chinese armies in the northeast beyond the Great Wall into Hebei Province. From the start of hostilities, China had appealed to its neighbors and the international community but received no effective support. When China called an emergency meeting of the League of Nations, a committee was established to investigate the affair. The Lytton Commission's report ultimately condemned Japan's actions but offered no plan for intervention. In response, the Japanese simply withdrew from the League on March 27, 1933. The Japanese army was under explicit instructions from Japanese Emperor Hirohito, who wanted a quick end to the China conflict and for Japan not to venture beyond the Great Wall. Japan's negotiating position was very strong, as the Chinese Nationalists were under severe pressure from the simultaneous full-scale civil war against the Chinese communists. Negotiations On May 22, 1933, Chinese and Japanese representatives met to negotiate the end of the conflict. The Japanese demands were severe: a demilitarized zone extending 100 km south of the Great Wall from Beijing to Tianjin was to be created, with the Great Wall itself under Japanese control. No regular Kuomintang military units were to be allowed in the demilitarized zone, but the Japanese were allowed to use reconnaissance aircraft or ground patrols to ensure that the agreement was maintained. Public order within the zone was to be maintained by a lightly armed Demilitarized Zone Peace Preservation Corps. Two secret clauses excluded any of the Anti-Japanese Volunteer Armies from the Peace Preservation Corps and provided for any disputes that could not be resolved by the Peace Preservation Corps