What does the selection of King Yan Zhao's recruitment of talents illustrate by the words of the wise man Guo Wei?

Explain that in order to get the Magi first, you must act like you respect the Magi. Guo

Although he is old, he enjoys a high reputation. When other talented people see that King Yan Zhao respects Guo, he respects wise men, and more people with practical talents will join King Yan Zhao. Just like Liu Bei reused Xu Jing in the Three Kingdoms, although Xu Jing had no actual talents, he would attract more talented people. The same principle applies to buying horse bones with ten thousand gold, that is, the monarch should show respect for the virtuous.