Blonde to brunette....no dye smh

well in the novel if i read right her hair was never blonde to begin with I think its's black but it could be brown. and I think lan caier was the blonde i don't remeber
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but i do remember yue never had blonde hair

https://www.novelupdates.com/series/miracle-doctor-abandoned-daughter-the-sly-emperors-wild-beast-tamer-empress/

go there you will see yue on the cover.