“No, but what kind of surgery?” Father asked promptly.
“It will be a surgery to replace your whole knee. Your left one is much worse than the right one. Luckily you are not fat.”
“Yes, but does it have to be such a surgery?” Father became more worried, speaking more anxiously, “Eight years ago, I went to see the doctor in my hometown and he said it cost more than ten thousand. Without thinking, I refused. Because ten thousand was impossible. Now you are saying seven or eight times more, it is more impossible.