Online refers to the transmission of brand information and promotional information in the form of soft and hard advertisements through television, radio, newspapers, internet, light boxes, billboards and other forms of media. ; Offline refers to publicity and promotion through other non-media forms, such as roadshows, press conferences, various discounts, gifts, sweepstakes, exhibitions, etc. Publishing information through intangible media, such as WeChat, QQ and Weibo, can be collectively referred to as online activities; In a fixed location, there are physical objects, physical stores and face-to-face sales, which can be called offline.