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Throughout the world, 계 (继 , 启 , 桂 , along with others...) is a common gender-neutral first name. The first name 계 is characteristic of China, where it is quite a rare unisex name, Nigeria, where it is a very rare gender-neutral name, and Indonesia, where it is a very rare masculine name. More frequently, 계 is the last name as well as the forename.