Didi is the abbreviation of ground promotion personnel, which refers to the marketing promotion personnel who spread all kinds of ground market resources with Internet cafes, universities and communities as the main components. 2016 March 15, CCTV 3. 15 party exposed the theft of QR code, credit card and other information.

As long as the sales volume is brushed, there is risk. Online brush sales are also a disadvantage. Nowadays, many people in the market are shouting to help stores do futures operations, but they only use offline promotion in one area. Such a high repetition rate is of course invisible in front of big data on the Internet. This has caused many stores to be unable to tell whether the other party is really pushing the line. Once the choice is wrong, it is very easy to have a series of problems such as unsafe storefronts.