zuò / shēng / yì / yào / jiǎng / xìn / yòng / bù / néng / shōu / le / huò / kuǎn / yǐ / hòu / lài / zhàng

做生意要讲信用，不能收了货款以后赖账。

Business requires trustworthiness; you must not refuse to pay after receiving the goods.