An aerial drone photo taken on Oct. 11, 2024 shows the Jiawuhai toll station under construction on the Jiuzhaigou-Mianyang expressway in southwest China's Sichuan Province. After the opening of the expressway, travelling time from Chengdu to Jiuzhaigou County will be shortened from the original eight hours to four hours. Jiuzhai Valley, also known as Jiuzhaigou National Park, is known for its spectacular waterfalls, lush forests, serene plateau lakes and karst rock formations. (Photo:Xinhua)

An aerial drone photo taken on Oct. 11, 2024 shows the construction site of the Jiuzhaigou-Mianyang expressway in southwest China's Sichuan Province. (Photo:Xinhua)

An aerial drone photo taken on Oct. 10, 2024 shows tourists visiting Jiuzhaigou scenic spot in southwest China's Sichuan Province. (Photo:Xinhua)

A giant panda is seen at a panda park in Jiuzhaigou County, southwest China's Sichuan Province, Oct. 10, 2024. (Photo:Xinhua)