I think first of all, when a child asks you about relevant knowledge, you should not shy away. You can tell him something vivid, such as your parents are flowers and he is fruit, then tell him something he can understand at his age. If it's a girl, you should tell her some relevant sexual knowledge when she comes to menstruation for the first time. Be ruthless and detailed. You can't avoid it, because the less parents talk, the more curious their children will be. And if it is a boy, you should not only tell him the basic sexual knowledge, but also tell him the related responsibility problems. At the same time, in the face of children's sexual thoughts, parents should not beat and scold, but help their children from the heart. Tell them that these are normal phenomena and don't have psychological burden.

Finally, parents are the best teachers for children's sex education.

A few days ago, I just participated in a debate about whether universities should offer sex education courses, so I have relevant understanding. I hope it helps you.