How to say one's proper business in Chinese 正事

不能丢了正事不办 ( Can't afford to lose business )

咱们先谈正事吧 ( Let's talk about business first )

正事都忙不过来，哪有工夫去玩儿！ ( It ’s too busy for business, how can I play? )

一点儿正事没谈，瞎扯了一个下午。 ( I didn't talk about the business at all, and talked for an afternoon. )

成天不理正事儿，专跟一些不三不四的人来往。 ( I don't care about business affairs all day, and I deal with people who are not indifferent. )