sim-koaⁿ-íⁿ心肝引

center of the chest

center of the chest; precordium

English Wiktionary, “心肝引” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%BF%83%E8%82%9D%E5%BC%95 · confidence: Medium (Wiktionary)