How to Write 炱 (tái) — Meaning “Soot”

Picture a small platform (台) sitting over a fire (火) — the black smoke rising from the fire turns into soot that coats the platform. The image of a platform getting dirty from fire helps you recall 炱 means soot.

Write the 火 radical first (four strokes: dot, short left-slant, right-falling, then the final dot), then the 台 part (five strokes: left-slant, horizontal, vertical, horizontal, and a dot at the bottom right). A common mistake is making the 火 too wide or misplacing the dot in 台 — keep the fire narrow and the platform balanced below.

炱 (tái) means soot, while 灶 (zào) means a kitchen stove or cooking range, and 灸 (jiǔ) refers to moxibustion, a heat-based therapy. Visually, 灶 uses 土 (earth) instead of 台, and 灸 uses 久 (long time) instead of 台 — each has a different component that changes the meaning.

炱 is not common in daily conversation but appears in technical or literary terms like 烟炱 (soot) and 煤炱 (coal soot), often in chemistry or industrial contexts. Culturally, soot (especially pine soot, 松炱) was historically used to make high-quality Chinese ink for calligraphy.

Common words containing 炱 include: 烟炱 (yān tái) — soot; lampblack; 煤炱 (méi tái) — soot; 松炱 (sōng tái) — pine soot.