塘沽协定
The Japanese continued to increase their diplomatic pressures over China. The Emperor of Manchukuo gave Henry Puyi the title of Kang Ten; and commenced their advance in North China, threatening Peking and Tientsin. Hostilities began in 1932, with one attack on Shanghai, but the Tanggu Truce (1933) between Japan and China fixed a demilitarized zone at the south of the Great Wall were the Chinese prohibited stationed troops.