```
"Sister, time is like milk, there's always some to be squeezed out," Qin Lan said with a smile.
Zhao Yang: "..."
"By the way, Brother, what do you usually do at night?" Qin Xi blinked her eyes and said, "When we were in school, we used to finish classes at eight or nine in the evening, or even later. Now that we're not in school, it seems like we have a lot of free time at night. How about you take some time at night to teach us?"
"I know what you mean, but I'm really busy. I might have some time at night, but I need to rest too. At night, you can read more of the medical books that Xiu'er Sister bought for you, and go over what you learned during the day, make some notes or something..."
Zhao Yang thought to himself that he'd be more interested in giving them physical exams...
"Oh, okay then..." the two sisters said with a hint of disappointment.
