Whether physically or psychologically, the distance between a small city and a developed city is far away. However, in recent years, the changes brought about by the Internet have made the distance between cities not so long, no matter in daily life or in consumption. Specifically, taxi rates which are clearly priced at usual times in third- and fourth-tier cities will rise and become a "no-bargain price" in the Spring Festival, but the appearance of "Didi" can ease such effects. Many people enjoy its convenience when they go back home during the Chinese New Year. And also bike share. Bike share appears one after another in many third- and fourth-tier cities now. Many peopleexperience it only once and become uncontrolled.They all use shared bike when shopping, buying food, and visiting friends. The last example is the "Yu 'E Bao" whichis sought after by relatives and friends in my hometown. A lot of older people are generally conservatives who put their deposits or salary in bank CDs. However, after learning that "ten thousand yuan can have one yuan or so daily earnings," they are also eager to switch bank deposits to various "baby" finances. In order to maximize the benefits of unused funds on hand, relatives and friends in the third and fourth tier cities make every effort: some fight in stock market, some choose wealth management products, and some actively monitor and invest in digital currency. Familiar hometown, familiar Didi travel, shared bicycle and financial management stories. Seen in this light, the significance of the development of the Internet in the third and fourth tier cities is not only the convenience of life, but also reduces the cost of trust between people.