The poet's allegory of the luxurious and dissolute life of Wang Sun at the end of the Tang Dynasty was entrusted to Cao Pi and Xin, commendable romantics in history. This is an allusion; The poet satirizes the flashy woman who doesn't understand the difficulty of state affairs with the name of the legendary girl who is good at singing, which deeply embodies the pain of "singing backyard flowers across the river" and is also an allusion.
The poet does not take "unbridled" as his proper name, but takes its meaning of "unbridled" and "unbridled", which is a pun; The poet's use of the name "Mochow" to express his sadness is also a pun, intended to be ironic.
(2) What is the way to express the author's feelings in the sentence "Sunset only looks at the water flowing eastward"?
With the technique of borrowing scenery to express emotion, he expressed his sadness about the decline and imminent collapse of the Tang Dynasty. (From the author's personal point of view, expressed the pain of vicissitudes of life. )