therefore, if you don't climb the mountain, you don't know the height of the sky. I don't know the thickness of the land without going deep [Xigu]; I don't know the greatness of learning until I hear the words of my late king.

From Xun Kuang's "Encouraging Learning", the above sentence is used here.

You don't know how big the sky is until you climb the mountain; I don't know how thick it is if I haven't been into a deep canyon; If you don't understand the legacy of the emperor, you don't know how to learn to ask questions.

Advise others to be open-minded and eager to learn.