[Urgent] What allusion does the author quote from the sentence "I reported the meaning of Jun Jintai and asked Yulong to die for Jun"? What's the role?

During the Warring States Period, Yan Zhaowang once built a platform to attract talents, because it was called "Huang Jintai". Jade Dragon was used as a sword in the Tang Dynasty. Gold and white jade are cherished by the world because of their texture and color. "Dragon" is a noble animal in ancient legends, and "Huang Jintai" is a symbol of longing for talents.

Huang Jintai: "National Ancient County Map" "Huang Jintai is 18 miles southeast of Yishui, and Yan Zhaowang (Ji Ping) put his daughter on the stage to extend the world."

It reflects the sadness that the author has made contributions to the army, but he has not been appreciated.