# learn chinese characters today:开 kai is a very common used words which can used as a verb and noun,let's have a look.https://www.hanbridgemandarin.com/course/demo/hsk_grammar
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# learn chinese characters today:开 kai is a very common used words which can used as a verb and noun,let's have a look.https://www.hanbridgemandarin.com/course/demo/hsk_grammar