凭证 píngzhèng HSK7 voucher Definitions Defs Origin Strokes Stroke Words Sentences Sents Showing: proof All meanings 3 píngzhèng 3 voucher 2proof 1 1 sentence for 凭证 (píngzhèng — proof) 他没有任何凭证来支持他的说法。 tā méiyǒu rènhé píngzhèng lái zhīchí tā de shuōfa. He doesn't have any evidence to support his claims. Source: Dong Chinese Dictionary