How does the poet use boating as a clue to express his thoughts and feelings?

The text of Zhou Bida's "Reminiscences of Yonghe Brothers on a Boat" is as follows:

One hanging Wu sail does not count the distance, but several times the mooring line is used.

On a cold day, the clouds are still frozen, and the river is vast and there is no wind or wave.

Counting the number of homes and mountains is always in sight, and the sound of cold wild geese is a sign of love.

Carp from the south suddenly appear all year round, I’m afraid there will be news to cook it urgently!

[Note]

① Zhou Bida: Poet of the Northern Song Dynasty, a native of Luling, Jiangxi. This poem was written when the author was on his way north by boat to Wudi (now Jiangsu).

②Chang Nian: The name given to boatmen in ancient times.

Appreciation and Appreciation:

The first couplet "no calculation of distance" and "how many times to tie the cable and how many times to travel" describe the distance of the boating trip. "It writes about the dangers of boating, the neck couplet writes about what you see and feel during the boating, and the tail couplet writes about the longing caused by catching a carp during the boating. Among them, the chin couplet describes the cold weather and turbulent water, expressing the poet's gloomy and desolate mood when he traveled far away from home. The neck couplet describes the "number of home mountains" that have disappeared from the poet's sight but still appear in front of the poet's eyes and the "cold wild geese" that are flying towards the poet's hometown, showing that the poet is full of homesickness and nostalgia that is difficult to dismiss.

It is very common for boatmen to catch carp during their boat trip. The beauty of the poem is that the poet adds the word "南来" before "carp", thinking that the fish comes from his hometown; Then we borrowed this common thing and expressed our eagerness to look forward to letters from home through the allusion of "Hu'er cooks carp, and there is a ruler in it". The borrowing of things and the use of allusions are clever, expressing the author's eagerness to miss his hometown.

Although the whole poem does not mention memory, the meaning of memory is implicit in it. Taking "boating" as a clue, recalling the brothers' homesickness is the main thread throughout. For reference.