戴上面具骗过所有人
[dài shàng miàn jù piàn guò suŏ yŏu rén]
'Wearing a mask to fool everyone around' This phrase hints at putting on an act or persona for others. One might adopt certain pretensions or behaviors as needed depending on the situation in social interactions while keeping the inner true self concealed, reflecting the complexity of human relations or the necessity of defense mechanisms sometimes.