Zhang Lin introduces fish skin handicrafts in a vocational school in Harbin, northeast China's Heilongjiang Province, Dec. 3, 2018. The fish skin handicraft of Hezhe ethnic group was listed as the first batch of national intangible cultural heritage in 2006. As a provincial inheritor, Zhang Lin has been researching and producing fish skin artworks for over ten years. She started to promote fish skin handicrafts in schools and communities through classes and forums in recent years to help people know more about this precious art form. (Xinhua/Wang Kai)