The whole sentence of this poem is that there is no limit to learning. This sentence comes from Han Yu, the first of the eight masters in Tang and Song Dynasties. It is a famous saying of his scholarship, which aims to encourage people to read more and not be afraid of hardship. It is also included in "Zengguang Xianwen".
Books are like a mountain. If you want to reach the summit of the lofty mountain of knowledge successfully, diligence is the only way to reach the summit. Knowledge is like the ocean, and the attitude of hard work will be a moving ship, which can take you to the other side of success.
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This sentence is an antithesis. Learning from the sea means learning from the mountains, infinity means having a road, and striving to build a boat means being diligent. No matter in rhyme, part of speech, connotation and artistic conception, every word is steady and appropriate everywhere.
"Xuehai" and "Shushan" are related, but they are not the same concept and cannot be confused. There is no end to learning the sea, which stems from Zhuangzi's "knowledge is endless", and there is no end to learning and research. However, the path of Shushan is objective and practical. As a material form, books always have their limits.
Diameter and boat, diameter can also be extended to walking, climbing mountains, or paving roads, while boat is riding a boat, riding a boat, or building a boat, because knowledge is extensive, but it takes constant efforts to pave a way to climb the mountain; There is no end to learning. Only by unremitting efforts can we sail into the ocean of knowledge by boat.
Tell us, don't be afraid of a lot of knowledge, what's more, it's endless, and you can't finish it in a few lifetimes. If we are willing to work hard, we will certainly get more.
Reference materials? Baidu Encyclopedia-There are roads in Shushan, and there is no limit to learning the sea.