见人说人话，见鬼说鬼话

jiàn rén shuō rén huà , jiàn guǐ shuō guǐ huàjianrenshuorenhua,jianguishuoguihua

1. (fig.) adaptable; able to deal with various kinds of people and situations
2. (derog.) insincere; two-faced

Study it in Yanamino