Aerial photo taken on Jan. 20, 2019 shows farmers harvesting roots of kudzu vine in Xiehe Township of Wulingyuan District in Zhangjiajie City, central China's Hunan Province. People in Wulingyuan District are busy harvesting and processing roots of kudzu vine to meet market demands as the Spring Festival approaches. The Chinese Spring Festival represents the beginning of the Chinese Lunar Year and falls on Feb. 5 this year. (Xinhua/Wu Yongbing)