A gentleman's spirit is untainted by the ashes of the world. The next sentence is a three thousand feet road to mortal world, and a white-haired drunken song reminds him of it. According to the query of relevant public information, this is a sentence from the Tang Dynasty poet Du Qiuniang's poem "Rising from a Nap in the Early Summer". It means that even if you are in the world, you must remain noble and indifferent, and not be distracted by the world. Be deceived by glitz, go your own way, live your own life, don't be disturbed by the troubles of the world, and enjoy inner peace and freedom.