Shang Mo Sang is a narrative Yuefu poem, which was compiled by Guo Maoqian, a poet in the Song Dynasty.
There are three stories in Shang Mo Sang. The first paragraph introduces Luo Fu's beauty, the second paragraph tells that the satrap coveted Luo Fu's beauty and wanted to hit on her, and the third paragraph tells that Luo Fu picked a famous flower and described that the owner is definitely "Gao Fushuai", so as to make the satrap feel ashamed. There is no bittersweet technique in D, only a foil technique, which does not expose the shameless of the ruling class. After all, "gentle lady, good gentleman" is human nature.