Li Yuening glazes porcelains at a porcelain research institute, in Hangzhou, capital of East China's Zhejiang province, Dec 8, 2017. From being an apprentice to expert, it took Li Yuening almost 30 years to study and rejuvenate the long-lost craftsmanship of imperial kiln during the Southern Song Dynasty (1127-1279). Multiple glazes were the main characteristics of then kiln products. As the only inheritor who mastered the complicated technique, Li hoped to carry forward the craftsmanship in the future. [Photo/Xinhua]