The government credit enhancement support tool is a tool funded by the People's Bank of China for refinancing and operated by a professional organization, which provides bond financing support for private enterprises by selling credit risk mitigation tools and other credit enhancement methods. China Bond Credit Promotion Investment Co., Ltd. is the principal agent of this support tool. If Jinzhou Bank fails to pay the current deposit certificate in full on the maturity date, China Bond will transfer the supplementary payment funds to Shanghai Clearing House on the next trading day of the payment date. Government credit enhancement refers to the behavior that the government provides guarantee or risk compensation for commercial banks to issue loans to specific objects such as farmers, farmers' professional cooperatives, individual industrial and commercial households (including small and micro business owners) and small and micro enterprises through policy guarantee companies, risk compensation funds, insurance companies and direct financial subsidies. For a long time, the difficulty of guarantee has always been a bottleneck restricting the development of commercial banks serving agriculture, rural areas and small and micro enterprises. The introduction of government credit enhancement mechanism is an effective way for financial institutions to support agriculture, rural areas and small and micro enterprises according to the principle of commercial sustainability in the new period, which is conducive to giving full play to the guiding and inciting efficiency of financial funds and alleviating the problems of loan difficulty and high loan cost for agriculture, rural areas and small and micro enterprises.