People often send things to Xie Guoberry. Sometimes they are close friends, sometimes they are people they know, and more often they are people they don't know.
Xie Guobei was used to the coming and going of these people. She didn't want to leave too many traces in the world, but those people didn't think so. They seemed keen on interacting with her and leaving different footprints in her boring life.
So, Xie Guobei decided to open a collection room to sort out some things from different people and keep them, so that he could look through them when he remembered.
Purpose: Don't pry into my secrets