Home / HSK Vocabulary / HSK 7–9 / 功效 功效 gōng xiào HSK 7–9 · C2 Meanings efficacy Quick facts Traditional功傚 HSK LevelHSK 7–9 CEFRC2 ← Back to HSK 7–9 word list Practice 功效 with flashcards MandoBridge uses spaced repetition to help you remember HSK 7–9 vocabulary — free on iOS and Android.