Definition of yellowface in English:
yellowface
noun ˈjɛləʊfeɪsˈjɛloʊˌfeɪs
mass nounMake-up used by a non-East Asian performer playing the role of an East Asian person.
that particular Chinese detective was invariably played by a white actor in yellowface
as modifier her yellowface make-up and broken speech caricature the Chinese culture she represents