People visit the 17th China Changchun International Automobile Expo in Changchun, northeast China's Jilin Province, July 10, 2020. The 10-day China Changchun International Automobile Expo kicked off at Changchun International Conference & Exhibition Center on Friday. More than 1,400 vehicles of about 150 brands from home and abroad are exhibited during the expo this year. (Photos: Xinhua)

People visit the 17th China Changchun International Automobile Expo in Changchun, northeast China's Jilin Province, July 10, 2020. The 10-day China Changchun International Automobile Expo kicked off at Changchun International Conference & Exhibition Center on Friday. More than 1,400 vehicles of about 150 brands from home and abroad are exhibited during the expo this year.

A visitor tries a vehicle exhibited at the 17th China Changchun International Automobile Expo in Changchun, northeast China's Jilin Province, July 10, 2020. The 10-day China Changchun International Automobile Expo kicked off at Changchun International Conference & Exhibition Center on Friday. More than 1,400 vehicles of about 150 brands from home and abroad are exhibited during the expo this year.

People visit the 17th China Changchun International Automobile Expo in Changchun, northeast China's Jilin Province, July 10, 2020. The 10-day China Changchun International Automobile Expo kicked off at Changchun International Conference & Exhibition Center on Friday. More than 1,400 vehicles of about 150 brands from home and abroad are exhibited during the expo this year.

A visitor takes photos at the 17th China Changchun International Automobile Expo in Changchun, northeast China's Jilin Province, July 10, 2020. The 10-day China Changchun International Automobile Expo kicked off at Changchun International Conference & Exhibition Center on Friday. More than 1,400 vehicles of about 150 brands from home and abroad are exhibited during the expo this year.

People visit the 17th China Changchun International Automobile Expo in Changchun, northeast China's Jilin Province, July 10, 2020. The 10-day China Changchun International Automobile Expo kicked off at Changchun International Conference & Exhibition Center on Friday. More than 1,400 vehicles of about 150 brands from home and abroad are exhibited during the expo this year.

A visitor takes photos at the 17th China Changchun International Automobile Expo in Changchun, northeast China's Jilin Province, July 10, 2020. The 10-day China Changchun International Automobile Expo kicked off at Changchun International Conference & Exhibition Center on Friday. More than 1,400 vehicles of about 150 brands from home and abroad are exhibited during the expo this year.

Visitors try a vehicle of FAW's iconic sedan brand Hongqi exhibited at the 17th China Changchun International Automobile Expo in Changchun, northeast China's Jilin Province, July 10, 2020. The 10-day China Changchun International Automobile Expo kicked off at Changchun International Conference & Exhibition Center on Friday. More than 1,400 vehicles of about 150 brands from home and abroad are exhibited during the expo this year.

People visit the 17th China Changchun International Automobile Expo in Changchun, northeast China's Jilin Province, July 10, 2020. The 10-day China Changchun International Automobile Expo kicked off at Changchun International Conference & Exhibition Center on Friday. More than 1,400 vehicles of about 150 brands from home and abroad are exhibited during the expo this year.