Ruan Xiyue, the fourth generation artist of Carved Gourd Ruan, teaches her students at Lanzhou Vocational Technical College in Lanzhou, northwest China's Gansu Province, April 1, 2019. A carved gourd, as the name suggests, is a gourd carved with landscapes, portraits, animals, calligraphy or poems, and then painted with ink. The process of gourd carving includes choosing gourd, painting, engraving and coloring. It was inscrbed in the first group of provincial intangible cultural heritages of Gansu in 2006. (Xinhua/Fan Peishen)