以资证明 Traditional 以資證明 yǐ zī zhèng míng 🔊 in support or witness hereof (idiom) + Keep this word Meanings yǐ zī zhèng míng 以資證明 in support or witness hereof (idiom) Its characters 以yǐto useHSK 5资zīresources证zhèngcertificateHSK 4明míngbright