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Family name Longdai (Longdai ) , around the world, is an extremely rare surname. Predominantly, Longdai is the forename as well as the last name.
咙歹, 隆代, 隆带, 隆黛, 龙代, 龙岱, and 龙带
An, Yu, Xu, Han, Song, Yang, Tokbi, Tisso, and Zhang