tā / biǎo / miàn / shàng / zhuāng / de / hěn / wú / hài / qí / shí / shì / zài / bàn / zhū / chī / lǎo / hǔ

他表面上装得很无害，其实是在扮猪吃老虎。

He appears harmless on the surface, but he is actually pretending to be weak to catch others off guard.