People who are good at asking questions, such as tapping wood, are easy first, and then their procedures. -"Book of Rites, Learning"

Asking questions is rich, but personal use is small. -"Shang Patent"

He is quick-thinking and eager for knowledge, and he is never shy to ask his subordinates for advice. -"The Analects of Confucius Gongye Chang"

You can't learn without asking. -Wang Han Zhong's On Balance and Practical Knowledge