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

Photo shows the scenery of Baota Mountain in Yan'an, northwest China's Shaanxi Province on April 21, 2019. 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/Shao Rui)