1, similar to Sijing, refers to the fourth phase of golden tax, which is the fourth phase of the golden tax project plan implemented by the state and the upgraded version of the third phase.

2. The system consists of a network and four subsystems. One network refers to the four-level computer network between People's Republic of China (PRC) State Taxation Bureau and provincial, prefectural and county State Taxation Bureaus, and the four subsystems refer to the VAT anti-counterfeiting and tax-control invoicing subsystem, anti-counterfeiting and tax-control authentication subsystem, VAT audit subsystem and invoice investigation subsystem.