Tianyi Bureau adheres to the management principle of "credibility first, convenience first" and serves overseas Chinese warmly and thoughtfully. According to the domestic custom, before the Spring Festival, Dragon Boat Festival, Mid-Autumn Festival, Winter Solstice and other festivals, we often go to the door to collect foreign exchange and write letters: for overseas Chinese who have no fixed address, we will receive it before the store, reply to the account and list it for collection. Strictly regulate management, the general administration and the sub-bureau each hold one copy, and the receipts will be written off one by one. At the beginning of the operation, Guo Youpin personally escorted each batch of silver letters. On one occasion, Guo Youpin escorted the remittance back to China. On the way, the ship was sunk in the sea by a typhoon, and the individual was rescued, but all the remittances were lost. After coming back, he resolutely sold his farmland and handed over the remittance without a penny. Since then, the reputation of Tianyi Credit Information has spread like wildfire, winning the dependence of overseas Chinese in various ports and the rapid expansion of salesmen. According to the report of Xiamen Customs for ten years (1892~ 190 1), from 1889 to 190 1, a total of 65,438 foreign ships and 65,438 sailboats entered Xiamen. The total remittance of each branch is tens of thousands of dollars a month. At the peak, the annual remittance of Tianyi Credit Information Office reached10 million US dollars, which was close to two-thirds (one-third) of the remittance in southern Fujian.