Feixin is an instant messaging product based on mobile phone application and in-depth interoperability with the Internet, launched by China Mobile Communications Group Corporation, integrating business applications and entertainment functions. In addition to the basic functions of chat software, Feixin can be logged in via multiple terminals such as PC, mobile phone, and WAP, realizing seamless real-time interoperability between PC and mobile phones, ensuring that users can stay online at all times; At the same time, more powerful functions provided by Feixin, such as free SMS to friends, ultra-low tariff for voice group chat, and file transfer between mobile phone and computer, allow users to generate a better product experience during use; Feixin can meet users' communication needs in anonymous form of text and voice, and truly creates a communication platform for users without constraints, restrictions, and safe communication and exchange.