Correct

真面目

/ zhēnmiànmù / 
Strokes

Definition

true identity/true colors

Example

As a Noun

true colours

1
Rènqīng
认清
qí
其
zhēnmiànmù
真面目

see sb in his true colours; know sb for what he is; see through

2
Lùchū
露出
zhēnmiànmù
真面目

reveal/show one's true colours; betray oneself