Bao'er asked in a perplexed tone, "There's so much to learn; won't I die from exhaustion?"
An amused chuckle escaped Yun Yang's lips. "It's necessary that those rising to position know more and realize more. Of course, when it comes to a certain point in time, you will only need to be able to do one thing."
"When? What is that?" Bao'er asked.
Yun Yang smiled without answering. After a while, he said softly, "Think of the world as a family. If you want a family not to be bullied, to have enough to eat and wear, to not suffer from then on, you only need a single piece of knowledge. Also, if you want everyone in the world to eat their fill and dress warmly, you also only need a single piece of knowledge."
Bao'er blinked his eyes in a daze; it was almost as if he understood it, and yet did not.
The two teachers did not comment on Yun Yang's lesson, but it was evident that they were also listening intently. In spite of this, they were astounded when they heard what he just said.