In the studio of Hong Kong art therapist Gigi Leung, recent visitors were met with an arresting spectacle — a wall full of well over 100 handwritten cards. These cards contained anonymous answers which earlier visitors had given to two questions: “What troubled you when you were growing up?” and, “What did you do at the time to make the trouble go away?” A 36-year-old wrote that they had suffered from severe headaches and bouts of vomiting because of immense academic pressure. A 26-year-old said their classmate had thrown bubble gum at them and shoved rubbish into their drawer. They tearfully …