It's a small board. Xinwei class in kindergarten usually refers to the class where school-age children are after entering the park, usually at the preschool level of 3-4 years old. In China, preschool education is generally divided into four age groups: large class, middle class, small class and nursing class. Xinwei class usually refers to a small class, that is, the class where children aged 3-4 are located.