The lingering sound describes beautiful singing or music, and the lingering sound is endless. It is also a metaphor that poetry is meaningful and thought-provoking. Liezi Tang Wen says: "In the past, Korea and Hubei were in the east, and food and grass were insufficient. After going to Yong Men, I sang and pretended to eat, and the sound lingered for three days. " Qing Shang He's "Bringing Wine"

Interpretation: around: around. Singing can't bypass the roof beam. Describe this song as beautiful and will stay in people's ears forever. He also described the poems as beautiful and intriguing.

Synonym: reverberation around the beam for three days.