What does the famous saying "Caigen Tan" mean? Combine the story of this old beggar and tell me your understanding of this sentence.

There are only three senior officials, and the "loss of benevolence" that has been endured for a lifetime may not be successful, and may even become a "beggar with a noble title". As long as a civilian is willing to "cultivate profits in Xiu De", he can become a "Shu Ren" and a peerless minister, regardless of age, region or time, the more the better. Therefore, instead of trying to be a "first-class official", it is better to be a "first-class citizen" who is more beneficial to society. Imagine if a society is full of "first-class people" who are helpful, dedicated and patriotic, and everyone is the kind of "lover without a position" who "holds a heart without a blade of grass". Isn't this the paradise on earth that generations yearn for?