In recent years, with the rise of social burnout phenomena such as “lying flat” and “social
fear”, users’ behaviors on social media platforms have also quietly changed. Setting WeChat Moments
to be visible for three days is one of the important manifestations. This paper studies the behavior that
can be seen in the user circle of friends for three days, and uses the method of in-depth interviews to
explore the impact of this behavior on the users themselves and their interpersonal relationships. The
study found that for users themselves, setting the Moments to be visible for three days can help them
dynamically control their privacy boundaries and meet the needs of safely presenting “I”; master the
initiative of self-presentation and reduce the influence of others on self-cognition. However, due to the
shortening of the dynamic presentation period, it will also promote the inertia of “diving”; demarcate
the boundaries of the private sphere and increase the negative impact of loneliness. The impact of this
behavior on user interpersonal relationships is also two-sided: although this “equal treatment” setting
can reduce misunderstandings and frictions between friends, this function also triggers the recovery of
common digital memories, increasing social costs; setting emotions Isolation barrier, accelerating the
weakening of interpersonal relationships; opposing anonymous surveillance authority, causing negative
effects such as out-of-control anxiety.