That poem in "To Youth" that Kai Zhang recited in the tavern?

The poem read in the tavern in "To Youth" is: "Donwu looks at Yuhang, and the sea of ??clouds is far away. When will I become famous, I will return to my hometown, and I will accompany my father-in-law with a drunken smile. Ten thousand times. There is no need to complain about leaving the cup. Drinking has never made me feel better. The lights are cold when I return to the river pond, but my surname is Yang. "This poem comes from Su Shi's "Nanxiangzi·He Yang Yuan" in the Song Dynasty. Keep the Secret State".

The meaning of the whole poem is: "Donwu and Yuhang are facing each other, but they are far away in the vast sea of ??clouds. I don't know when I will become famous and return to my hometown in rich clothes. By then I will laugh with you and be drunk for thirty thousand years." ”

“You don’t have to express your feelings of separation with wine like the secular way. There is always another reason for the happy banquet tonight. I will send you back with the remaining lamp and walk across the river in a daze. It is you, Yang Yuanhu, who sheds tears like a sheep."

Extended information:

"Nanxiangzi" is the name of a Tang Dynasty Jiaofang song, and the dance score is preserved in Dunhuang scrolls. , indicating that the tune of this tune was originally supposed to be dance music. "Nanxiang" means "Southern Country". Su Shi's "Nanxiangzi" poetry collection all extols southern scenery, which shows that the early "Nanxiangzi" poems indeed have distinctive regional characteristics. In the poem "Nan Xiangzi·He Yang Yuan Yuan, Time Moves to Guard Mizhou", Su Shi mainly expresses his reluctance to leave his friends.

Baidu Encyclopedia-Nanxiangzi·He Yang Yuanyu, time moved to guard Mizhou