On the shopping platform Pinduoduo, kan yi dao, “give it one cut,” works through friends. The Paper explained in 2022: a user chooses a product and invites friends to help, and if they cut the price to zero within 24 hours, the user can claim the product free.
In 2018, the news site Jiemian ran the headline: “I blocked a friend who asked me to help cut a price on Pinduoduo.” The friend “had added you back on purpose, just so that you would cut the price for him.” In 2022, the tech site ifanr wrote that “cutting once” had become a popular game, “and also a touchstone of friendship.”