Nursery is usually a place to provide daily care for children under three years old and other children who can't take care of themselves. Therefore, if the family has enough time and resources, enough time and energy to accompany their children to grow up, and the children have no special need to keep in touch with other children, there is no need to go to nursery classes before the children go to kindergarten.
However, in some cases, attending preschool classes can provide valuable experience and advantages for children. For example, if children are introverted and have low independence in some aspects, nursery classes may provide children with more opportunities to get out of their comfort zones, learn to better interact with other children and adults, learn to take care of themselves and cooperate better.
In a word, parents should evaluate their children according to their actual situation and make corresponding decisions on whether to let them go to nursery before going to kindergarten.