油光可鉴

lit. oily and shiny to the point of reflecting (idiom) / lustrous

oil / fat / grease / petroleum / to apply tung oil, paint or varnish / oily / greasy / glib / cunning

glossy / gleaming / shiny (due to greasiness) / slick / greasy / oily

light / ray / CL:道[dao4] / bright / only / merely / to use up

can / may / able to / to approve / to permit / to suit / (particle used for emphasis) certainly / very

used in 可汗[ke4 han2]

variant of 鑑|鉴[jian4]

old variant of 鑒|鉴[jian4]

bronze mirror (used in ancient times) / to reflect / to mirror / sth that serves as a warning or a lesson / to examine / to scrutinize

variant of 鑑|鉴[jian4]