Lin Xiaobei, 26 years old, is a clerk in Qingze County Development and Reform Bureau, with a monthly salary of 3,200. When he woke up one day, there was an APP called "Minsheng System" on his phone, which sent him money based on the county's population every day - more than 28,000. But this money cannot be spent on yourself, it can only be used to improve people's livelihood. So he started to build nursing homes, buy B-ultrasound machines, hire retired doctors, open village clinics, install street lights... Every money was spent wisely. He thought that having money would change everything, but he found that the most difficult thing was not spending money, but letting the money truly turn into light and shine where it should. The county is small, but there are many people who need light.