"Li Muyun, your Grandpa Du is already sixty-eight years old. According to military regulations, he could have retired three years ago to enjoy his later years, like me. But do you know why he's been holding on to his position?"
You blink your eyes, looking into the distance.
"You brat! Your Grandpa Du has worried so much about you over the years, and here you are making sarcastic remarks!" The old military doctor grew more agitated, immediately grabbing your right hand and dragging you over. Despite his age of over seventy, his strength was formidable; usually, even a burly man couldn't shake you in the slightest.
"Grandpa Liang, what are you doing?"
Faced with this elder who has doted on you since childhood, you feel somewhat guilty.