What are the basic principles of our criminal law?

The three basic principles of criminal law are the principle of the legality of crimes, the principle of appropriateness of punishment and the principle of equality before the law.

1. The principle of the law of the line: no crime is committed without an express provision of the law, and no punishment is meted out without an express provision of the law.

2. The principle of appropriateness of punishment: the severity of punishment should be appropriate to the severity of the crime.

3. The principle of equality before the law: the basic meaning is: any person who commits a crime is equal in the application of the law. No one is allowed to have privileges beyond the law. For all people's legitimate rights and interests should be protected equally, without allowing any discrimination.