It is understandable to let children know the knowledge of the body. It is important to see how the teacher teaches. Talking about transsexuality before is a sign of lack of common sense. People's exploration of the body began from a very young age. Without a correct understanding, many wrong judgments and orientations will be formed. Do you think children in primary and secondary schools are too young to be suitable? However, no one can imagine how precocious children are nowadays. The information is so developed and the network is so huge. Instead of letting children secretly learn by themselves driven by curiosity, it is better to give correct guidance publicly.