[shuō duǎn dào cháng]   

说    短    道    长    说长处，讲短处。形容议论别人的好坏是非。

说长处，讲短处。形容议论别人的好坏是非。

Discussion as to who is right and who is wrong

说古道今    说今道古    说说而已    说千说万    说好说歹