Home / HSK Vocabulary / HSK 6 / 天然 天然 tiān rán HSK 6 · C1+ Meanings natural Quick facts HSK LevelHSK 6 CEFRC1+ ← Back to HSK 6 word list Practice 天然 with flashcards MandoBridge uses spaced repetition to help you remember HSK 6 vocabulary — free on iOS and Android.