"Hu" originally refers to the hair growing on the mouth, while the upper lip is called "mustache" (moustache, moustache, or "two-lipped chicken" in Cantonese), the chin is called "goatee" and the temples connected with the chin are called "moustache".
The one under the upper lip is called "beard"
The chin is called a goatee.
The cheeks are called "falling cheeks"