"Do I? I've forgotten," he lied calmly, then added, "In fact, the day before you came to my house, Yuan Ai had visited. To make her believe that I still couldn't forget about her, I deliberately arranged the study, pretending to let her see it by accident. The cigarette case wasn't the one she gave me; I had long thrown the original into the fireplace and burned it. What you saw was a counterfeit I made later, luckily she didn't notice the difference. All the photos were Xiu's collection. I borrowed them from him; he said he shouldn't avoid the past, no matter how unbearable, as it was all part of his growth."
I suddenly realized that everything had been a prop set up for the scene! I had an epiphany.