"tie" is a new type of relationship popular among young people. From travel to games, post-00s find "partners" on different occasions and engage in a certain activity together.
Some netizens believe that "partnering" splits friendship into "needs" and usually each demand scene is strongly bound to a "Partner" The main thing is "companionship in vertical segments", according to netizen @Bean Sprouts. The "tie" relationship makes up each piece called "exercise under the friendship"