民国时期,国有商业银行林立,由盐业、金城、大陆、中南四家银行组成的“北四行”联合银行集团经营业绩甚佳,所发行的钞票信誉颇高,在当时商业银行中堪称翘楚。由四家银行联合成立的“四行准备库”是一联合纸币发行机构,为民国时期中国商业银行所特有。“北四行”之一的盐业银行,既是民国主要商业银行之一,也是“北四行”中最早成立的银行,更是四行联营的倡导者。盐业银行,顾名思义,在创办时因欲以经营盐业为主而得名。张镇芳,袁世凯的表弟,盐业银行的创始人,时任长芦盐运使,熟悉盐务。民国三年(1914年),财政部因急需军款,以“盐款为财政之大宗,为维持盐业,调剂金融”的名义,下令筹设盐业银行。民国四年(1915年),张镇芳以私人名义呈报财政部,“镇 During the period of the Republic of China, the state-owned commercial banks were well-established, and the ”North Four-Bank“ United Bank Group, which is composed of the four banks of salt industry, Jincheng City, mainland China and South Africa, performed very well. The bank bills issued were of high credit standing. Can be called the best. The ”Bank Preparation Bank“ jointly established by the four banks is a joint banknote issuing institution unique to China’s commercial banks in the Republican era. The Salt Bank, one of the ”North Four Banks,“ is not only one of the major commercial banks in the Republic of China, but also the earliest one in the ”North Fourth Four-line“ and an advocate of the four lines of joint ventures. Salt Bank, as the name implies, was founded in the name of its desire to operate the salt industry. Zhang Zhenfang, Yuan Shikai’s cousin, the founder of the Salt Bank, when the governor of salt Lu Yun, familiar with salt. In the third year of the Republic of China (1914), the Ministry of Finance ordered the establishment of the Salt Bank in the name of ”urgent demand for military funds,“ ”taking salt payments as the bulk of finance, maintaining the salt industry, and regulating the finance." In four years of the Republic of China (1915), Zhang Zhenfang submitted his personal name to the Ministry of Finance