Aerial photo taken on April 25, 2019 shows the scenery of Xixi'nan Village of Huizhou District in Huangshan, east China's Anhui Province. (Xinhua/Zhang Duan)

Aerial photo taken on April 25, 2019 shows the scenery of Xixi'nan Village of Huizhou District in Huangshan, east China's Anhui Province. (Xinhua/Zhang Duan)

Aerial photo taken on April 25, 2019 shows a bird resting on a tree at Xixi'nan Village of Huizhou District in Huangshan, east China's Anhui Province. (Xinhua/Zhang Duan)

A visitor takes a photo in Xixi'nan Village of Huizhou District in Huangshan, east China's Anhui Province, April 25, 2019. (Xinhua/Zhang Duan)

Aerial photo taken on April 25, 2019 shows the scenery of Xixi'nan Village of Huizhou District in Huangshan, east China's Anhui Province. (Xinhua/Zhang Duan)

Aerial photo taken on April 25, 2019 shows the scenery of Xixi'nan Village of Huizhou District in Huangshan, east China's Anhui Province. (Xinhua/Zhang Duan)

Aerial photo taken on April 25, 2019 shows the scenery of Xixi'nan Village of Huizhou District in Huangshan, east China's Anhui Province. (Xinhua/Zhang Duan)

Aerial photo taken on April 25, 2019 shows the scenery of Xixi'nan Village of Huizhou District in Huangshan, east China's Anhui Province. (Xinhua/Zhang Duan)