After a pause, the white-haired man continued. "And every time he comes back, he gives me the same reason. He would say that he had something to do, but he doesn't say what it was exactly."
"Yes, I know that too!" Another friend of Doctor Bai's immediately agreed. "I remember that he had a calendar in the waiting room of the hospital. There were many dates marked with red pens on the calendar. Because being a doctor was very busy, I also used red pens to mark the birthdays and anniversaries of my family members on the calendar. I also marked many dates, so I didn't pay much attention to it at that time. However, I vaguely heard the nurse talk about it later. At that time, the nurses at the station were all guessing what those dates meant, but they couldn't contact him no matter what after he left."
