Chongqing in southwest China, has seen the vegetation recover in its ecological function zone along the Yangtze River (Photos: Xinhua)

Chongqing in southwest China, has seen the vegetation recover in its ecological function zone along the Yangtze River

Chongqing in southwest China, has seen the vegetation recover in its ecological function zone along the Yangtze River

Chongqing in southwest China, has seen the vegetation recover in its ecological function zone along the Yangtze River