ìm-hé窨火

to cover a fire to control it

to cover a fire to control it (in a stove, etc.); to stop a fire (in a stove, etc.)

English Wiktionary, “窨火” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E7%AA%A8%E7%81%AB · confidence: Medium (Wiktionary)