魚肚白

white (paint from dried fish guts) / marble white color of the dawn sky

fish-belly white (used to describe the dingy light of the dawn sky)

surname Yu

fish / CL:條|条[tiao2],尾[wei3]

fish maw / a food dish made from the swim bladder of fish

tripe

belly

white / snowy / pure / bright / empty / blank / plain / clear / to make clear / in vain / gratuitous / free of charge / reactionary / anti-communist / funeral / to stare coldly / to write wrong character / to state / to explain / vernacular / spoken lines in opera