证 On the HSK 3 vocabulary list, at CEFR level B1. zhèng ㄓㄥˋ 証 to admonish 證 certificate 證 proof 證 to prove 證 to demonstrate 證 to confirm Where 证 is used Example sentences and grammar articles using 证 Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0 国际中文教育中文水平等级标准, 中华人民共和国教育部, MIT