Wang Zongxun, curator of a museum of Jinping Writs, displays a digitalized document at the museum in Jinping County, southwest China's Guizhou Province, March 18, 2019. Of more than 60,000 Jinping Writs being preserved, over 40,000 pieces have been restored and digitalized in the museum where Wang and his workmates have made strenuous efforts in the protection work for the ancient documents. They therefore earn a reputation as the guardians of Jinping Writs. (Xinhua/Ou Dongqu)