People participate in memorial activities to commemorate the 80th anniversary of "July 7 Incident" in Changchun City, capital of Northeast China’s Jilin Province, July 7, 2017. Nearly 2,000 people visited a local museum to understand Japan's invasion and occupation of northeast China, offer flowers in tribute to war heroes, and join other activities. Japan started a full-scale invasion into China on July 7, 1937. (Photo: China News Service/Zhang Yao)