What is a business method patent and where is its classification?

What is a business method? At present, the legal documents in force in China do not give a special definition of business methods, but give a broad explanation. For example, in 2004, China National Intellectual Property Administration issued "Rules for Examination of Patent Application for Business Method Invention (Trial)", which specifically explained business methods, saying that "business methods involve business activities and affairs, and the business meaning here is wider than that in the traditional sense. For example, it includes: finance, insurance, securities, leasing, auction, investment, marketing, advertising, tourism, entertainment, services, real estate, medical care, education, publishing, business management, enterprise management, administrative management, and affairs arrangement. The document was abolished in April 2008. Although abolished, the document further explains the business method patent, which refers to the invention patent with the theme of business method completed by computer and network technology. This explanation is acceptable. In other words, computer and network technology are the main technical carriers of business methods and important technical forms on which they depend. Because business method patents are mostly realized through computer systems and often expressed in the form of software, they are closely related to computer software patents.