December 9th. According to the requirements for epidemic prevention and control in Juancheng County, as of December 9, 222, Juancheng County belongs to the normalized area of epidemic prevention and control, and the blockade has been lifted, so the school started on December 9. Juancheng County, which belongs to Heze City, Shandong Province, is located in the southwest of Shandong Province, and is adjacent to Henan Province across the Yellow River in the northwest. It is named after Juanyi and Juancheng.