This photo taken on Oct. 3, 2021 shows workers cleaning and maintaining woodcut printing blocks with traditional techniques at the Dege Sutra Printing House in Dege County of Garze Tibetan Autonomous Prefecture, southwest China's Sichuan Province. Built in 1729, the Dege Sutra Printing House preserves in good condition 325,520 woodcut printing plates containing significant Tibetan classics dating back to the 11th century. The majority of the blocks were carved between the 18th and mid-20th centuries.

The printing blocks housed at the Dege Sutra Printing House in Sichuan were listed in this May as documentary heritage on the Asia Pacific regional register of UNESCO's Memory of the World (MOW) Programme. (Xinhua/Shen Bohan)