Senses
牝牡骊黄/ 牝牡驪黃 beyond superficial details
literally a black stallion and a yellow mare, used to describe looking past outward appearances to judge based on intrinsic quality or essence
牝牡骊黄/ 牝牡驪黃 outward appearance
the external characteristics or superficial aspects of a thing, especially when contrasted with its internal substance