Aerial view of Yancheng City Ruins Park in Jiangsu(1/5)

Aerial view shows the Yanchen City Ruins Park, the most well preserved ruin site of the Spring and Autumn Period (770B.C-221B.C)in China, Changzhou, east China's Jiangsu Province, Aug. 7, 2022. (Photo: China News Service/Yangbo)

The ruin site has a unique structure of three cities and three rivers interwoven with each other.

Aerial view shows the Yanchen City Ruins Park, the most well preserved ruin site of the Spring and Autumn Period (770B.C-221B.C)in China, Changzhou, east China's Jiangsu Province, Aug. 7, 2022. (Photo: China News Service/Yangbo)

Aerial view shows the Yanchen City Ruins Park, the most well preserved ruin site of the Spring and Autumn Period (770B.C-221B.C)in China, Changzhou, east China's Jiangsu Province, Aug. 7, 2022. (Photo: China News Service/Yangbo)

Aerial view shows the Yanchen City Ruins Park, the most well preserved ruin site of the Spring and Autumn Period (770B.C-221B.C)in China, Changzhou, east China's Jiangsu Province, Aug. 7, 2022. (Photo: China News Service/Yangbo)

Aerial view shows the Yanchen City Ruins Park, the most well preserved ruin site of the Spring and Autumn Period (770B.C-221B.C)in China, Changzhou, east China's Jiangsu Province, Aug. 7, 2022. (Photo: China News Service/Yangbo)