Great changes have taken place in China's former revolutionary base Yan'an

Combo photo shows villager Bai Shengyou grazing a flock of sheep at Liangcun Township in Yan'an, northwest China's Shaanxi Province on April 27, 1993 (top, taken by Tao Ming) and a staff member feeding the sheep at a livestock farm in Ansai District of Yan'an on April 23, 2019 (bottom, taken by Liu Xiao). Yan'an, a former revolutionary base of the Communist Party of China (CPC), is no longer labeled "poor," as its last two impoverished counties have shaken off poverty, the Shaanxi provincial government announced Tuesday. (Xinhua)