宋初收缴各割据势力所藏金帛至京师,另置库储存,称封桩库。每年节余亦存入此库。这是宋朝的一种财政制度,凡岁终用度之余﹐皆封存不用﹐以备急需。《续资治通鉴长编》记载,宋太祖曾拟以此库存钱赎回燕云十六州。“太祖别置封桩库,尝密谓近臣曰:‘石晋(后晋石敬瑭)割幽燕以赂契丹,使一方之人独限外境,朕甚悯之。欲俟斯库所 Early Song confiscated the separatist forces possession of gold silk to the capital, another library storage, said the closure of the library. Annual savings are also credited to this library. This is a kind of financial system of the Song Dynasty, where the cost of the end of the year, are sealed not need to prepare for urgent needs. ”Renewal of governance Tongchong Changbian“ records, Song Taizu had proposed redemption of the inventory money Yanyun sixteen states. ”Taizu do not set off the seal storehouse, taste secret close minister said: ’Stone Jin (after Jin stone respect 瑭) cut Youyan to bridge Khitan, so that one side of the people outside the limit, 朕 very compassion.