妍[姸]yán

 [书] （美丽） beautiful: 不辨 ～ 媸 be unable to tell the beautiful from the ugly; 百花争 ～。 A hundred flowers contend in beauty.
◆妍皮不裹媸骨 beauty without and intellect within; beautiful in appearance and clever in mind; pretty and intelligent; unity of one's outward beautiful appearance and inner clever thoughts; What is wrapped by the beautiful skin is not ugly bones.