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Family name Ruzhai (Ruzhai ) , throughout the world, is an extremely rare last name. Much more prevalently, Ruzhai is the forename as well as the last name.
Ружай, 儒斎, 入宅, 如宅, 如寨, 如斋, 汝宅, 汝斋, 罗斋, and 茹斋
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