What are the sources of law?

Also known as "source of law", "form of law". Refers to the form of legal norms. That is, what kind of law is created by what kind of organ in what field through what kind of way, manifested in the form of what kind of legal documents and how the relationship between these different forms. Such as laws, decrees, statutes, regulations, resolutions, orders, jurisprudence and customs. In the slavery period, the sources of law were first expressed in customary law, and then in the form of statutory law. The sources of law in the feudal period mainly include customary law, laws, imperial edicts, governmental proclamations and jurisprudence. The sources of capitalist law are mainly constitutions, laws, treaties, jurisprudence, custom and jurisprudence. Among them, the civil law system countries are mainly statutory law, and the common law system countries are mainly case law. The sources of Chinese law mainly include the Constitution, laws (including basic laws and laws other than basic laws), administrative regulations, local regulations, autonomous regulations and individual regulations, the laws of special administrative regions, and the international treaties to which China has acceded and signed.