Combo photo shows people at the Xinhua Bookstore in Yan'an, northwest China's Shaanxi Province on Sept. 3, 1981 (top, file photo) and a girl reading books at the China Red Bookstore, formerly known as the Xinhua Bookstore, on May 8, 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. (Photos: Xinhua)

Combo photo shows a newly-built skating rink at the foot of the Baota Mountain in Yan'an, northwest China's Shaanxi Province on Dec. 16, 1981 (top, file photo) and a stadium at the foot of the Baota Mountain in Yan'an on May 5, 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.

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.

Combo photo shows young teacher Wang Shuzhen (R) guiding her student conduct an experiment at Yan'an University in Yan'an, northwest China's Shaanxi Province on July 19, 1961 (L, file photo) and students performing experiments at Yan'an University in Yan'an on May 6, 2019 (R, 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.

Combo photo shows artists performing in Zhidan County of Yan'an, northwest China's Shaanxi Province on March 31, 1982 (top, file photo) and visitors watching performance at Fengjiaying Village in Ansai District of Yan'an on Oct. 19, 2018 (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.

Combo photo shows a farming scene at Nanniwan during the War of Chinese People's Resistance Against Japanese Aggression in Yan'an, northwest China's Shaanxi Province (top, file photo) and visitors taking photos at Nanniwan in Yan'an on Sept. 12, 2018 (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.

Photo shows the scenery of Ziwuling National Nature Reserve in Yan'an, northwest China's Shaanxi Province on Aug. 22, 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.

Combo photo shows villagers practicing waist drum dance at Dishuigou Village in Ansai District of Yan'an, northwest China's Shaanxi Province on Feb. 5, 1989 (top, file photo) and waist drummer performing in Nangou of Ansai District in Yan'an on Oct. 20, 2018 (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.

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.

Aerial photo shows the scenery of Ziwuling National Nature Reserve in Yan'an, northwest China's Shaanxi Province on Aug. 23, 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.

Combo photo shows a view of Yan'an, northwest China's Shaanxi Province in the 1960s (top, file photo) and on April 25, 2019 (bottom, taken by Liu Xiao) respectively. 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.

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.

Combo photo shows a view along the Nanhe River in Yan'an, northwest China's Shaanxi Province on Dec. 26, 1983 (L, file photo) and on May 5, 2019 (R, taken by Liu Xiao) respectively. 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.

Aerial photo shows the rice fields at Nanniwan in Yan'an, northwest China's Shaanxi Province on Sept. 12, 2017. 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.