Visitors experience VR games at the 12th China-Northeast Asia Expo in Changchun, northeast China's Jilin Province, Aug. 23, 2019. The five-day expo themed on "enhancing mutual trust and cooperation to create beautiful prospects for Northeast Asia" opened Friday in the city of Changchun. (Photos: Xinhua)

People visit the 12th China-Northeast Asia Expo in Changchun, northeast China's Jilin Province, Aug. 23, 2019.

People visit the 12th China-Northeast Asia Expo in Changchun, northeast China's Jilin Province, Aug. 23, 2019.

Staff members introduce Russia-produced honey to visitors at the 12th China-Northeast Asia Expo in Changchun, northeast China's Jilin Province, Aug. 23, 2019.

Actresses of China's Korean ethnic group perform at the 12th China-Northeast Asia Expo in Changchun, northeast China's Jilin Province, Aug. 23, 2019.

A visitor views a 5G live broadcast by Chinese tech giant Huawei at the 12th China-Northeast Asia Expo in Changchun, northeast China's Jilin Province, Aug. 23, 2019.

A college student volunteer operates an AR mechanical arm at the 12th China-Northeast Asia Expo in Changchun, northeast China's Jilin Province, Aug. 23, 2019.