Pic story: retired man's devotion to support Tibet

Li Chunmin (L) visits his host family when he worked in Tibet, in Bangru Village, Yiri Township, Riwoqe County of Qamdo, southwest China's Tibet Autonomous Region, May 3, 2021. 

This photo re-shot on April 21, 2021 shows Li Chunmin working in Riwoqe County of Qamdo, southwest China's Tibet Autonomous Region in 1981. 

Li Chunmin checks the water temperature at the No. 2 Primary School in Riwoqe Township, Riwoqe County of Qamdo, southwest China's Tibet Autonomous Region, May 4, 2021. 

Senior hobbyists demonstrate Taijiquan moves in east China's Zhejiang Workers harvest salt at salt field in Binzhou, east China's Shandong