People visit the 17th China Changchun International Automobile Expo in Changchun, northeast China's Jilin Province, July 19, 2020. The 10-day automobile expo closed on Sunday. (Xinhua/Zhang Nan)

A woman visits the 17th China Changchun International Automobile Expo in Changchun, northeast China's Jilin Province, July 19, 2020. The 10-day automobile expo closed on Sunday. (Xinhua/Zhang Nan)

People visit the 17th China Changchun International Automobile Expo in Changchun, northeast China's Jilin Province, July 19, 2020. The 10-day automobile expo closed on Sunday. (Xinhua/Zhang Nan)

People visit the 17th China Changchun International Automobile Expo in Changchun, northeast China's Jilin Province, July 19, 2020. The 10-day automobile expo closed on Sunday. (Xinhua/Zhang Nan)