April 13. According to official website's information from xinyi city Education Bureau, the specific time is: the third and sixth grades of primary school will resume classes on April/0/2, 2023; the first, second, first and second grades of high school will resume classes on April/0/3, 2023; and the first to fifth grades of primary school will resume classes on April/0/4, 2023. Xinyi, a county-level city in northern Jiangsu Province, is under the management of Xuzhou, a prefecture-level city, and is the "North Gate" of Jiangsu Province. It is located in the transition zone from southern Shandong hills to northern Jiangsu plain. China's ancestors have lived here since ancient times, and it was established in the Qin Dynasty. Maling Mountain in China was also called "the first mountain" by Qianlong of Qing Dynasty.