Cai Shuikuang, a lacquer thread sculptor, works on a lacquer thread in Xiamen, East China's Fujian province, Aug 4, 2017. Lacquer thread sculpture is an art in southeast China which uses well-tempered lacquer threads to build decorative patterns. Originated in the mid-17th century, lacquer thread sculpture is listed as one of China's national intangible heritages. [Photo by Wei Peiquan/Xinhua]