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

Aerial photo shows a view of Huanglong County in Yan'an, northwest China's Shaanxi Province on May 31, 2018. 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)