Residents and tourists visit the Feicui Lake tourism resort to spend their leisure time at dusk in Hefei, east China's Anhui Province, July 29, 2019. (Xinhua/Zhang Duan)

Residents and tourists visit the Feicui Lake tourism resort to spend their leisure time at dusk in Hefei, east China's Anhui Province, July 29, 2019. (Xinhua/Zhang Duan)

In this aerial photo taken on July 29, 2019, residents and tourists visit the Feicui Lake tourism resort to spend their leisure time at dusk in Hefei, east China's Anhui Province. (Xinhua/Zhang Duan)

In this aerial photo taken on July 29, 2019, residents and tourists visit the Feicui Lake tourism resort to spend their leisure time at dusk in Hefei, east China's Anhui Province. (Xinhua/Zhang Duan)

Residents and tourists visit the Feicui Lake tourism resort to spend their leisure time at dusk in Hefei, east China's Anhui Province, July 29, 2019. (Xinhua/Zhang Duan)