One face good one face bad (当面一套背后一套) — Chinglish Slang

Slang Name：One face good one face bad

Chinese：当面一套背后一套

Type：Business Speak / Chinglish Slang

English：
A Chinese business criticism: "one face in front, another face behind." It describes someone who acts friendly to your face but does harmful things behind your back. In Chinese offices, this is considered one of the worst character flaws — being duplicitous or two-faced in the workplace.

中文：
一个中国式商业批评："当面一套，背后一套。"形容那些当面友好、背后使坏的人。在中国办公室里，这被认为是最糟糕的性格缺陷之一——在职场中表里不一、两面三刀。

This phrase "当面一套背后一套" (dāng miàn yī tào bèi hòu yī tào) is a common Chinese criticism of people who are not genuine. It literally means "one set in front of the face, another set behind the back." In business contexts, it's used to warn about colleagues or partners who smile at you in meetings but undermine you elsewhere. The Chinglish version preserves the vivid imagery of having two different "faces" for different situations.

中文："当面一套背后一套"是一个常见的中文批评，形容不真诚的人。字面意思是"面前一套，背后一套"。在商务语境中，用来提醒注意那些在会上对你笑但在别处使绊子的同事或合作伙伴。中式英语版保留了不同场合有两张不同"面孔"的生动画面。