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Last name Яньшэн (Yansheng , Яньшэн ) , in the entire world, is a rare cognomen. The surname Яньшэн is characteristic of Singapore, where it is a rare surname, China, where it is an extremely rare surname, and Chile. Measured by absolute frequency, it is commonest in China, Singapore, and Brazil. More prevalently, Яньшэн is the forename as well as the last name.