Aerial photo taken on Nov. 8, 2019 shows countryside scenery near the Hongcun scenic area in Huangshan, east China's Anhui Province. The traditional solar term of Lidong, the beginning of winter, fell on Nov. 8 this year. (Xinhua/Zhang Duan)

Aerial photo taken on Nov. 8, 2019 shows a forest near the Tachuan scenic area in Huangshan, east China's Anhui Province. The traditional solar term of Lidong, the beginning of winter, fell on Nov. 8 this year. (Xinhua/Zhang Duan)

Aerial photo taken on Nov. 8, 2019 shows countryside scenery near the Tachuan scenic area in Huangshan, east China's Anhui Province. The traditional solar term of Lidong, the beginning of winter, fell on Nov. 8 this year. (Xinhua/Zhang Duan)

Two ducks are seen preening in a farm field near the Hongcun scenic area in Huangshan, east China's Anhui Province, Nov. 8, 2019. The traditional solar term of Lidong, the beginning of winter, fell on Nov. 8 this year. (Xinhua/Zhang Duan)

Photo taken on Nov. 8, 2019 shows the countryside scenery near the Hongcun scenic area in Huangshan, east China's Anhui Province. The traditional solar term of Lidong, the beginning of winter, fell on Nov. 8 this year. (Xinhua/Zhang Duan)

Aerial photo taken on Nov. 8, 2019 shows countryside scenery near the Tachuan scenic area in Huangshan, east China's Anhui Province. The traditional solar term of Lidong, the beginning of winter, fell on Nov. 8 this year. (Xinhua/Zhang Duan)

Aerial photo taken on Nov. 8, 2019 shows the countryside scenery near the Hongcun scenic area in Huangshan, east China's Anhui Province. The traditional solar term of Lidong, the beginning of winter, fell on Nov. 8 this year. (Xinhua/Zhang Duan)

Photo taken on Nov. 8, 2019 shows countryside scenery near the Hongcun scenic area in Huangshan, east China's Anhui Province. The traditional solar term of Lidong, the beginning of winter, fell on Nov. 8 this year. (Xinhua/Zhang Duan)

Aerial photo taken on Nov. 8, 2019 shows the countryside scenery near the Tachuan scenic area in Huangshan, east China's Anhui Province. The traditional solar term of Lidong, the beginning of winter, fell on Nov. 8 this year. (Xinhua/Zhang Duan)

Aerial photo taken on Nov. 8, 2019 shows countryside scenery near the Tachuan scenic area in Huangshan, east China's Anhui Province. The traditional solar term of Lidong, the beginning of winter, fell on Nov. 8 this year. (Xinhua/Zhang Duan)

A bird perches on a stalk in a farm field near the Hongcun scenic area in Huangshan, east China's Anhui Province, Nov. 8, 2019. The traditional solar term of Lidong, the beginning of winter, fell on Nov. 8 this year. (Xinhua/Zhang Duan)