Aerial photo taken on Nov. 23, 2019 shows the scenery of Xidi ancient town during the early winter in Yixian County, east China's Anhui Province. (Xinhua/Zhang Duan)

Aerial photo taken on Nov. 23, 2019 shows a view of Xidi ancient town during the early winter in Yixian County, east China's Anhui Province. (Xinhua/Zhang Duan)

Aerial photo taken on Nov. 23, 2019 shows a view of Xidi ancient town during the early winter in Yixian County, east China's Anhui Province. (Xinhua/Zhang Duan)

Aerial photo taken on Nov. 23, 2019 shows people visiting Xidi ancient town during the early winter in Yixian County, east China's Anhui Province. (Xinhua/Zhang Duan)

Aerial photo taken on Nov. 23, 2019 shows people visiting Xidi ancient town during the early winter in Yixian County, east China's Anhui Province. (Xinhua/Zhang Duan)