"戒菸" by Ronghao Li is in F# major with a steady 128 BPM, blending pop and R&B influences. The track features smooth synth pads, crisp percussion, and a groovy bassline, creating a polished, modern production. Li's emotive vocals and layered harmonies enhance the song's reflective yet upbeat mood, delivering an 80% energy level that feels both introspective and danceable.