The main functions of Nina Li Chi Cash Withdrawal Community are social function, communication function and transaction function. Social interaction generates trust endorsement, and trust endorsement generates business. Socialization is the primary function, and the commercial value of communication and transaction comes from social function. According to public information, generally speaking, there are four types of communities: First, the work circle and the professional circle overlap. The second is the family circle, which is used for family and friends to communicate. The third is the circle of friends, which overlaps with the radius of life. Fourth, the functional circle is used for specific purposes, such as WeChat business.