This master graduation project was started from the current issue - COVID 19 crisis, explored a special context - the first quarantined city, Wuhan. The main purpose of this project is to get deeper understanding of the people who were quarantined at home for long time, and try to use interactive design to help them improve their mental states during quarantine life. The outcome of this project -chachat (茶寮)was a sub-application in Wechat mini program platform. It was designed for the young people who were quarantined at home for a long time in 2020 COVID- 19 pandemic. It aimed to help these people to reduce some negative emotions and brought more energy while working/studying from home.