Moral: the importance of laying a good foundation. Tall buildings rise from the ground and the foundation is solid. Have a solid learning foundation, otherwise it is useless to learn more!
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This fable comes from Xunzi's "Persuasion". The original intention is to emphasize that people should learn the right path as the foundation of their own existence. Explain that in learning, the foundation should be solid, otherwise, it is useless to learn more.
It enlightens us that it is very important to lay a good foundation for a tall building.
No matter what you do, everything you do must be built on a solid, reliable and solid foundation. Without such a foundation, no matter how good and meticulous your work is, all your efforts will be in vain.