How does Xin Qiji express his yearning for his hometown in Man Jiang Hong?

In "Man Jiang Hong", the poet expressed his nostalgia for his hometown, including the nostalgia for the vast Central Plains: "Looking at the tower, the mountains overlap; Where is home, smoke and waves are separated. Who told him that, past lives? Butterflies don't fly thousands of miles, and the rule is broken night. It is rare to listen to the pillow to persuade people to return! " It is precisely because of this yearning that the author is often in a good mood. "Looking up at the northwest clouds and leaning on Wan Li needs a long sword" expresses the poet's ambition to clarify the Central Plains.