Home / HSK Vocabulary / HSK 2 / 信号 信号 xìn hào HSK 2 · A2 Meanings signal Quick facts Traditional信號 HSK LevelHSK 2 CEFRA2 ← Back to HSK 2 word list Practice 信号 with flashcards MandoBridge uses spaced repetition to help you remember HSK 2 vocabulary — free on iOS and Android.