What do Song Wenzhi and the ancient poem "Da Yu Zhi Shui Bei Inn Wall Title" mean?

In the lunar month, geese began to fly south. It is said that they flew to Dayuling, and they all turned back. I wonder, will my own trip to the south be turned back? The tide rises and falls, and Lin CuO cannot do without it. Tomorrow I will climb to the top of the mountain and look north at my hometown, or I can see the red berries on the top of the mountain.

Note Dagengling: The mountain name is in Gengxian County, Jiangxi Province.

Post: A place where officials and bureaucrats stay.

Yangyue: October of the lunar calendar.

Phlegm: refers to the evil spirits in the mountains and forests in hot and humid weather in the south.

Plum Blossom: Plum Blossom on Emei Mountain in Daqing.

Explain that Hongyan flew south in October, flew here and turned back. But my journey is endless. When can I come back? When the spring tide recedes, Jiang Jing and miasma fill the mountains. Tomorrow morning, I will climb my hometown and pick plum blossoms for my relatives.

The analysis of this poem was written by the author when he was exiled to Lingnan. Legend has it that Hongyan flew south to Dayuling and turned back, but the author was exiled this time. We must continue to go south, and the north will return to the sun. We can't come back here like geese. Compared with geese, people are not as good as geese, which shows the author's inner bitterness. Before the post station, the river has just passed the tide, and the river is very calm at this time; In the mountains and forests, Apollo embodies the gas of boils. The place where the author was demoted this time is even worse than what he has seen so far. If he climbs to the north to see his hometown tomorrow, he should see the plum blossom in the dragon head, even though it is October. The plum blossom in Chang 'an only bloomed in recent spring, and the plum blossom here bloomed in October, which shows that the author is worried about being relegated to Lingnan, which is far away. After Song was demoted, he gained more understanding of life and enriched the content of his poems. No matter how lyrical a poem is, it makes people feel that it is not the face of his early poems that are precise, harmonious but pale.