1, explicit expression of all or part of men's and women's bodies, giving people a vulgar and despicable feeling.

2, explicit performance or easy to associate with sexual behavior, giving people a vulgar and despicable feeling.

3. In academic contents such as medicine and folklore, the description and expression of sex stimulates children's bad feelings about sex.

Second, it obviously encourages rudeness and cruelty, and its standard is:

1, confirm and praise the description of violence that violates social morality and laws.

2. Describe cruel murders, injuries, atrocities, executions, etc.

3. Describe killings, injuries and atrocities in detail by challenging methods, so that people can imitate them, and so on.

The laws on the protection of minors in most countries in the world stipulate that publishers of harmful books should mark "unsuitable for children", sellers should not sell books unsuitable for children, and units or individuals showing films and videos unsuitable for children should take measures to prevent children from entering the market. Those who violate the above provisions will be punished by law.

The reason why children are not allowed by law is to purify the social environment harmful to children and ensure their healthy growth.