appear united outwardly but divided at heart
The Chinese idiom, Pinyin is m à oh é sh é NL í, which means that they are closely related on the surface, but actually they are two hearts. It comes from Su Shu Zunyi.
The origin of Idioms
"Su Shu · Zunyi" says: "those who seem to be in harmony with each other are lonely, those who slander others are far away, and those who are loyal die."
Idiom usage
But as soon as I became his party representative, I changed from "like-minded" to "~". Guo Moruo's Tu Jia Bu
Analysis of Idioms
[synonym]: have different dreams in the same bed, be in harmony with each other and be apart from each other
appear united outwardly but divided at heart
search minutely for sb . 's smallest fault - sōu gēn tī chǐ
Far water does not know near thirst - yuǎn shuǐ bù jiě jìn kě
The warbler is jealous of the swallow - yīng cāi yàn dù