Children learn to knit a net for painted eggs under the guide of a teacher marking the upcoming "Lixia", or beginning of summer, at a kindergarten in Wuyi County of Jinhua, east China's Zhejiang Province, May 5, 2019. "Lixia" marks the seventh solar term on the Chinese lunar calendar signifying the beginning of summer. (Xinhua/Zhang Jiancheng)

Children paint on eggs under the guide of a teacher to mark the upcoming "Lixia", or beginning of summer, at a kindergarten in Shacun Town, Taihe County of Ji'an, east China's Jiangxi Province, May 5, 2019. "Lixia" marks the seventh solar term on the Chinese lunar calendar signifying the beginning of summer. (Xinhua/Deng Heping)

Children help make festival cuisine to mark the upcoming "Lixia", or beginning of summer, at a kindergarten in Yuping Dong Autonomous County, southwest China's Guizhou Province, May 5, 2019. "Lixia" marks the seventh solar term on the Chinese lunar calendar signifying the beginning of summer. (Xinhua/Hu Panxue)

Children show painted eggs to mark the upcoming "Lixia", or beginning of summer, at a kindergarten in Changxing County, east China's Zhejiang Province, May 5, 2019. "Lixia" marks the seventh solar term on the Chinese lunar calendar signifying the beginning of summer. (Xinhua/Xu Binhua)