Clay sculptures created by craftsman Chang Tianping are seen in Linxia Hui autonomous prefecture, Northwest China's Gansu province, Aug 18, 2017. As the inheritor to the provincial intangible cultural heritage, Chang creates clay sculptures and teaches the young in order to protect the skill. [Photo/Xinhua]

Craftsman Chang Tianping creates clay sculpture in Linxia Hui autonomous prefecture, Northwest China's Gansu province, Aug 18, 2017. [Photo/Xinhua]

Craftsman Chang Tianping creates clay sculpture in Linxia Hui autonomous prefecture, Northwest China's Gansu province, Aug 18, 2017. [Photo/Xinhua]

Craftsman Chang Tianping (right) teaches an apprentice to create clay sculpture in Linxia Hui autonomous prefecture, Northwest China's Gansu province, Aug 18, 2017. [Photo/Xinhua]

Craftsman Chang Tianping (left) introduces the clay sculpture to a tourist in Linxia Hui autonomous prefecture, Northwest China's Gansu province, Aug 18, 2017. [Photo/Xinhua]