Community group buying originated in first-tier cities, but its development has been hindered and failed to scale smoothly (due to user groups and needs, Fax Lists which will be discussed later), and then gradually expanded to second-tier cities. By 2017, community group buying companies with supply chain resources have been favored, and they have begun to expand to third-tier cities. In 2018, there was a boom in community group buying Fax Lists and entrepreneurship, and hot money poured in quickly, forming a tuyere. In addition, the monthly GMV of some second-tier cities has exceeded 10 million. By 2019, community group buying has blossomed everywhere Entering 2019, community group buying has blossomed everywhere, Fax Lists and has entered a period of concentrated promotion and reshuffle. By the end of the year, many fringe players had been phased out. 2. In 2020, the community group buying has evolved from the three-year war against Lu Bu to the siege of six sects Entering 2020, under the blessing of the epidemic, Fax Lists players on the community group buying track began to focus on "showing off their muscles". First, in May of this year, the leading start-up company "Ten Tuanhui" C1 round of financing. First, Didi, Meituan and Pinduoduo fought against Lu Bu. Didi began to test its new business in Chengdu in June - the community e-commerce "Orange Heart Select", mainly through the WeChat applet in the first few months. Subsequently, Orange Heart Fax Lists Preferred entered the Didi Chuxing App in early November, and entered 14 provinces and cities across the country, including Jiangsu, Guangdong, and Hebei. Meituan issued an Fax Lists organizational adjustment announcement on July 7, announcing its official entry into the community group buying market, setting up a "optimized business unit", targeting the sinking marketer.