First of all, the price, public kindergartens are cheap, and there will be no arbitrary charges, while private kindergartens are really too expensive, and ordinary office workers sometimes really can't afford it. The most important thing is that sometimes the price is opaque, and many times the charges are inconsistent.
Secondly, teachers, many people may think that teachers in public kindergartens are definitely not good, but they are often wrong. In the selection of teachers in real public kindergartens, the head teacher must have a bachelor's degree in preschool education, and some may have higher requirements. Most of the teachers in the class are in this major, and the life teacher must have a nurse's certificate.
However, in private kindergartens, the head teacher may be a pre-school education major, or he may become a monk halfway, while the head teacher and life teacher basically do not need any certificates or too high academic qualifications. This is not as good as public schools, because public schools have quantitative requirements for teachers and some certificates held by schools.
Then there is the norm. Public kindergartens often have requirements for students' dress. Generally speaking, there are few cases where children compare with each other, and there are few cases of child abuse in public kindergartens, because there will be assessments. But illegitimate children have different clothes and lifestyles, and many times children will be overweight in comparison.
But how to choose in the end depends on the kindergarten you choose.