The results of my dad's examination came out. It was a gastric ulcer. There was bleeding in two places in the stomach, but the bleeding stopped. I used four clamps to clamp it, but it was nothing serious.
I just had to stay in the hospital for observation for a few days, so I made an exchange with my mother. She went to the hospital to take care of me, and I came back.
I coded two chapters intermittently yesterday, so there are only two chapters in today's update. I'll wait for a while and add four chapters tomorrow or the day after tomorrow.