Can new laws and regulations be retroactive to previous offenses?

Legal analysis: unless there are special provisions, new laws and regulations after the implementation of the general will not be retroactive to previous offenders. Because one of the basic principles of the rule of law is "non-retroactivity". In layman's terms, that is, we can not use today's laws and regulations to constrain the behavior of yesterday.

Legal basis: "Chinese people's *** and the State Legislation Law" Article 84 Laws, administrative regulations, local laws and regulations, autonomous ordinances and individual regulations, regulations shall not be retroactive, but in order to better protect the rights and interests of citizens, legal persons and other organizations, except for special provisions.