Why did Gou Jian and Chai Wang, the King of Yue in the Southern Song Dynasty, write this poem?

The tomb of Gou Jian, the king of Yue, and the mountains of Qin from the sunset. Who is sad? Today, people didn't see Wu's death, so the grave still spread to the countryside. Rain disturbs flowers, and birds turn yellow leaves and go down the palace wall. Don't look at the high platform when boarding, the smoke trees are slender. Mount Qin Wang, in Shaoxing, Zhejiang, is the highest mountain in this area, named after Qin Shihuang boarded it to see the sea. The first couplet means that the mountains of the king of Qin are covered with a vast scene at sunset, but who has the heart to express such sad feelings?

Zhuan Xu means that contemporary people have never seen the scene of Wu being attacked by Yue, so people near Gou Jian's tomb often tell stories of being humiliated by Wu.

The "Fu Dao" and "Palace Wall" in the Necklace are not the real scenes in front of us, but the imagination of the scenery in Gong Yue. The meaning of "Fu Dao" is the same as that of Epang Palace.

The Central Plains in couplets refers to the Yellow River valley occupied by Jin people, just like the Central Plains in Lu You's "Looking at the Central Plains like a Mountain in the North". "Smoke tree" and "slim" mean it is difficult to recover. A brief analysis of this is a sad work that satirizes the present by borrowing the past. The story of Gou Jian, the King of Yue, is well known, especially the ups and downs of the small court in the Southern Song Dynasty. It is quite clever to link this ancient and modern situation with one positive and one negative. The first couplet begins with a vast and desolate scene and sad feelings. With the repeated singing of "self" and "who will recover", the poet's loneliness and sad feelings are so strong. Zhuan Xu's past hurts the present. Although Gou Jian "still told stories" and "conquered the countryside", today people have not seen the "death of Wu", and the sadness of Gou Jian's feat of serving the country is hard to see again. Neck couplets are lyrical on the spot, Gou Jian's tomb, palace, rain disrupting flowers and birds turning yellow leaves, how cold and desolate. Is that all the poet wrote? Isn't it the same with Bianjing in Climbing the Heights and Looking Far, and the Phoenix Que in Lin 'an in the recent imagination? William, Xin Qiji, Lu You, Chen Liang and other patriots, when looking at the Central Plains from afar, expressed the same grief and indignation, as well as the despair of restoring the Central Plains.