What is the difference between the emotions expressed by a mooring under north fort hill's neck couplet and tail couplet?

The emotional differences expressed by a mooring under north fort hill's neck couplet and tail couplet are as follows: the neck couplet was injured due to the scene; Tail couplet is made by Jing homesick.

full text: under blue mountains we wound our way, my boat and I, along green water. ? Until the banks at low tide widened, with no wind stirring my lone sail. ? ...Night now yields to a sea of sun, and the old year melts in freshets. ? At last I can send my messengers Wildgeese, homing to Loyang.

Translation: Wandering alone beyond the green hills, sailing alone among the green waters. As the tide rises, the gap between the two sides becomes wider. The wind blows; A white sail is just hanging high. The night will be over, and the rising sun on the sea will rise; The new year has not arrived, and the spring in the river has already appeared. Now that the letter from home has been sent, where will it be sent? I hope that the geese will return to the north and send them to the edge of Luoyang.

Extended information:

a mooring under north fort hill is the work of Wang Wan, a poet in the Tang Dynasty. This poem accurately and concisely describes the magnificent scenery such as green mountains, green waters, flat tides and wide banks when the author berthed at the foot of Beigu Mountain in late winter and early spring, and expresses the author's deep homesickness.

begins with a antithetical sentence, writing about the feelings of wandering and wandering in the hometown; The second time to write "Tidal Flat" and "Positive Wind" on the river, the scene is magnificent and broad; Sanlian wrote the scene of sailing at dawn, and the antithesis implied philosophy, "Describe the scenery, it will last forever", giving people a positive artistic charm; The tail couplet sees the geese miss their parents and echoes the first couplet.

The whole poem is naturally written with a pen, with vivid scenery, real feelings, blending scenes, magnificent style and great charm, which has always been widely read.