White-Cheeked Laughingthrush 
(Khướu đầu xám, Pterorhinus vassali)
formerly placed in the genus Garrulax.

Leiothrix Leiothrichidae Ancient Greek leios meaning "smooth" and thrix meaning "hair".
The name of the genus Pterorhinus combines the Ancient Greek pteron meaning "feather" with rhinos meaning "nostrils".

The white-cheeked laughingthrush is a species of bird in the family Leiothrichidae.