Home / HSK Vocabulary / HSK 4 / 航空 航空 háng kōng HSK 4 · B2 Meanings aviation Quick facts HSK LevelHSK 4 CEFRB2 ← Back to HSK 4 word list Practice 航空 with flashcards MandoBridge uses spaced repetition to help you remember HSK 4 vocabulary — free on iOS and Android.