There is a natural relationship between the brig and the coast that can never be changed. The two poems "Not afraid of the ends of the earth/Sooner or later you/you are on my voyage/I am in your sight" can give people a profound artistic conception, which is meaningful and intriguing, and is also one of Shu Ting's famous sentences.
So, what does the brig mean, and what does the coast represent? What kind of emotion does the poet want to express? You may think this is a love poem. Yes, this poem well reflects the feeling that lovers are inseparable and sentimental, and it is not an exaggeration to say that it is a love poem.
But if we look at this poem from a broader perspective, we will find that it is not just a love poem. It also seems to symbolize a poet's deep love and emotional belief in the motherland, which is deeper, wider and more admirable than love. You can say that it symbolizes the love for the motherland, the love for the nation, the yearning for the hometown and so on. In other words, a literary youth can express his love and enthusiasm for literature by making such poems. This may be the theme that the author wants to express.