Intangible cultural heritage successor Wang Xin (C, upper) teaches children to make steamed buns at her home in Zaozhuang, East China's Shandong province, July 8, 2018. Some students in Zaozhuang learnt making skills of intangible cultural heritages to enrich their summer vacation. [Photo/Xinhua]

Photo taken on July 8, 2018 shows a steamed bun made by intangible cultural heritage successor Wang Xin in Zaozhuang, East China's Shandong province, July 8, 2018. Some students in Zaozhuang learnt making skills of intangible cultural heritages to enrich their summer vacation. [Photo/Xinhua]

Intangible cultural heritage successor Wang Xin (C) teaches children to make steamed buns at her home in Zaozhuang, East China's Shandong province, July 8, 2018. Some students in Zaozhuang learnt making skills of intangible cultural heritages to enrich their summer vacation. [Photo/Xinhua]