chēng-chhiⁿ-chhiⁿ靜生生

very quiet

very quiet; very tranquil

English Wiktionary, “靜生生” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E9%9D%9C%E7%94%9F%E7%94%9F · confidence: Medium (Wiktionary)