Citizens view the light show along the Yitong River in Changchun City, northeast China's Jilin Province, Aug. 21, 2019. (Xinhua/Lin Hong)

Citizens walk along the Yitong River in Changchun City, northeast China's Jilin Province, Aug. 21, 2019. (Xinhua/Lin Hong)

Aerial photo taken on Aug. 21, 2019 shows the illuminated Yongding Bridge over the Yitong River in Changchun City, northeast China's Jilin Province. (Xinhua/Lin Hong)

Citizens take photos of the light show along the Yitong River in Changchun City, northeast China's Jilin Province, Aug. 21, 2019. (Xinhua/Lin Hong)

Photo taken on Aug. 21, 2019 shows the light show along Yitong River in Changchun City, northeast China's Jilin Province. (Xinhua/Lin Hong)

Citizens view the light show along the Yitong River in Changchun City, northeast China's Jilin Province, Aug. 21, 2019. (Xinhua/Lin Hong)