What is fighting for more fish?

Pinduo Fish is a coupon search gadget (WeChat applet). 90% of the products on platforms such as Taobao, Tmall and Pinduoduo have coupons. This pinduo fish should be the data of cooperation and docking with Ali's mother. In order to attract traffic outside the station, Ali's mother encouraged outsiders to help promote it. Besides coupons, there should be a promotion commission.