I think adults should treat children honestly, and I would choose to let children know the truth of the world, because overprotection may make children more vulnerable. Children will grow up sooner or later. If we blindly create a perfect world for them, they will inevitably experience a huge blow after entering society.
Or choose to inform according to the child’s age as appropriate. After all, childhood should be full of purity and beauty. Letting children who have not matured their minds come into contact with the dark side of society prematurely will not only have a bad impact on their growth and development, but also hinder their pursuit and yearning for beautiful things.