Photo taken on Jan. 2, 2020 shows a white-eye perching on the branch of a cherry tree in Guiyang, southwest China's Guizhou Province. (Photos: Xinhua/Liu Xu)

Photo taken on Jan. 2, 2020 shows a white-eye perching on the branch of a cherry tree in Guiyang, southwest China's Guizhou Province.

Photo taken on Jan. 2, 2020 shows white-eyes perching on the branch of a cherry tree in Guiyang, southwest China's Guizhou Province.

Photo taken on Jan. 2, 2020 shows a white-eye perching on the branch of a cherry tree in Guiyang, southwest China's Guizhou Province.

Photo taken on Jan. 2, 2020 shows a white-eye foraging on the branch of a cherry tree in Guiyang, southwest China's Guizhou Province.

Photo taken on Jan. 2, 2020 shows a white-eye perching on the branch of a cherry tree in Guiyang, southwest China's Guizhou Province.

Photo taken on Jan. 2, 2020 shows a white-eye perching on the branch of a cherry tree in Guiyang, southwest China's Guizhou Province.

Photo taken on Jan. 2, 2020 shows a white-eye foraging on the branch of a cherry tree in Guiyang, southwest China's Guizhou Province.