Aerial photo taken on May 27, 2020 shows a boat on the water of the West Lake scenic area in Hangzhou, east China's Zhejiang Province. (Xinhua/Weng Xinyang)

Aerial photo taken on May 27, 2020 shows a boat passing by an island in the West Lake scenic area in Hangzhou, east China's Zhejiang Province. (Xinhua/Weng Xinyang)

Aerial photo taken on May 27, 2020 shows people having fun in the West Lake scenic area in Hangzhou, east China's Zhejiang Province. (Xinhua/Weng Xinyang)

Aerial photo taken on May 27, 2020 shows a boat passing by an island in the West Lake scenic area in Hangzhou, east China's Zhejiang Province. (Xinhua/Weng Xinyang)

Aerial photo taken on May 27, 2020 shows vehicles running on the Yanggongdi causeway in the West Lake scenic area in Hangzhou, east China's Zhejiang Province. (Xinhua/Weng Xinyang)