What role does the peacock play in wandering at the beginning of the poem when it flies five miles southeast?

"Peacock flies southeast, falling in five miles" rises, rendering the atmosphere with concrete images and inspiring readers' imagination; In conception, it also has the function of controlling the full text and triggering stories. In the end, the birds were buried together, "looking up at each other and singing, reaching five watches every night." Life can't be together, but death can "duet" and "reach the fifth watch every night", which places people's strong desire to pursue free love and happy life. At the end of the poem, it reads "Thank future generations, be careful not to look forward to it", and also expresses anger and good wishes.