你的谎言我的笑颜
[nĭ de huăng yán wŏ de xiào yán]
你的谎言我的笑颜 (ni de huang yan wo de xiao yan) can be described as 'your lies and my smiling face,' indicating a poignant situation where even though one party knows the truth of a lie, they continue to display a smile, possibly out of forgiveness or acceptance.