Home HSK Vocabulary HSK 1 昨天 昨天 zuó tiān HSK 1 · A1 Meanings yesterday Quick facts HSK LevelHSK 1 CEFRA1 ← Back to HSK 1 Overview Practice 昨天 with flashcards MandoBridge uses spaced repetition to help you remember HSK 1 vocabulary — free on iOS and Android. ← All HSK 1 vocabulary