There is a road to learning books, but there is no limit to learning the sea. From the famous academic society of Han Yu, a famous poet and philosopher in Tang Dynasty. "Augmented Xianwen" also has this link.

It means that hard work is the key to learning. Endless learning is necessary for every aspirant and every teacher.

If people want to make continuous progress, they have to live and learn. You can't get bored with your study. Since ancient times, who has achieved success without benefiting from the courage to learn and keep learning? What's more, now is an era in which culture and ideas are updated rapidly.