熄火
xī huǒ · HSK 7
(of fire
🔥 熄 extinguish + 火 fire = the fire goes out; also a car engine stalling
熄 carries the sense of putting out or dying down, and 火 is fire. Together 熄火 is a flame going out or being put out, and figuratively an engine stalling or a situation dying down.
火 — pictograph of flames rising
火 is a pictograph showing flames rising upward from a fire, with the central stroke as the main blaze and the side strokes as sparks. The ancient oracle bone form looked even more clearly like a burning flame. It still means 'fire' today and serves as a common radical in characters related to heat, burning, or cooking.