Visitors view a panda-themed thangka at Sichuan Provincial Library in Chengdu, southwest China's Sichuan Province, Oct. 11, 2020. Over 40 thangka painters spent a year in finishing the thangka painting with length of 172 meters and height of 2.6 meters. (Xinhua/Wang Xi)

A hostess speaks during a vedio recording session in front of a panda-themed thangka at Sichuan Provincial Library in Chengdu, southwest China's Sichuan Province, Oct. 11, 2020. Over 40 thangka painters spent a year in finishing the thangka painting with length of 172 meters and height of 2.6 meters. (Xinhua/Wang Xi)

A visitor views a panda-themed thangka painting at Sichuan Provincial Library in Chengdu, southwest China's Sichuan Province, Oct. 11, 2020. Over 40 thangka painters spent a year in finishing the thangka painting with length of 172 meters and height of 2.6 meters. (Xinhua/Wang Xi)

A guide presents a panda-themed thangka to visitors at Sichuan Provincial Library in Chengdu, southwest China's Sichuan Province, Oct. 11, 2020. Over 40 thangka painters spent a year in finishing the thangka painting with length of 172 meters and height of 2.6 meters. (Xinhua/Wang Xi)

A visitor takes a picture of a panda-themed thangka at Sichuan Provincial Library in Chengdu, southwest China's Sichuan Province, Oct. 11, 2020. Over 40 thangka painters spent a year in finishing the thangka painting with length of 172 meters and height of 2.6 meters. (Xinhua/Wang Xi)