Example image of eyePlorer eyePlorer map for 'He–Umezu Agreement': 1935 Empire of Japan June 10 Republic of China Second Sino-Japanese War Battle of Rehe Imperial Japanese Army Japanese invasion of Manchuria Demilitarized zone Inner Mongolia Northern China Tanggu Truce January 22 Kōki Hirota Minister for Foreign Affairs (Japan) People's Republic of China – Japan relations Boycott Wang Jingwei Kwantung Army Chief of staff He Yingqin Japanese China Garrison Army Kuomintang May 29 Peiping National Military Council Takashi Sakai Tianjin Hebei June 4 May 30 Yu Hsueh-chung June 5 Blue Shirts Society Great Wall of China June 7 June 12 June 9 Chiang Kai-shek Communist Party of China Commander-in-chief Yoshijirō Umezu 1937 July 7 Umezu Hebei–Chahar Political Council East Hebei Autonomous Council Marco Polo Bridge Incident Chin–Doihara Agreement Song Zheyuan Battle of Shanghai