In A Dream of Red Mansions, Shouyihong held a banquet for Fang Qun. What did Fang Guan sing?

Baochai smiled and said, I'll catch it first. I don't know what to catch. Said the cylinder shook, stretched out his hand and pulled out a brand. When everyone looked at it, they saw a peony on the sign, which read "Yan Guan Fangqun". Here is the fine print, a Tang poem, saying:

Ren ruthless, moving.

Another note: a toast at the table. This is the crown of all, and it is a new song of congratulations, regardless of elegance and vulgarity of poetry. Everyone laughed and said, what a coincidence, you also match peony flowers. Say everyone * * * a toast. Baochai ate it and smiled. Let's listen to Fang Guan sing a song. Fang Guandao: In that case, everyone will have a nice door cup. So everyone ate wine, and Fang Guan sang: The opening scenery of the birthday party is good ... Everyone said: Call back quickly, it is very unnecessary for you to celebrate your birthday at this time. Pick out your excellent singing skills. Fang Guan had to sing a song "Shang Huashi" carefully. Cuifeng feather tied a broom, and then casually walked to Tianmen to sweep the fallen flowers ... Only then.