而言
with regard to (preceding phrase)
概而言之
same as 總而言之|总而言之[zong3 er2 yan2 zhi1]
王顾左右而言他
the king looked left and right and then talked of other things; to digress from the topic of discussion (idiom)
简而言之
in a nutshell; to put it briefly
总而言之
in short; in a word; in brief