Why should the detailed rules for the implementation of the patent law be formulated, and what are the main contents?

Patent law is the legal basis for implementing the patent system, which only stipulates some important basic principles, and the implementation of these principles involves many specific issues, so it is necessary to formulate detailed rules for implementation. Why should we formulate detailed rules for the implementation of the patent law? The detailed rules mainly include the following contents: explaining and concretizing some principles in the provisions of the Patent Law, supplementing some matters not stipulated in the Patent Law, and making specific provisions on the specification requirements and various procedures and steps of documents to be submitted.