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Family name 智信 (Zhixin , 智信 ) , around the globe, is a rare last name. The family name 智信 is habitual in Hong Kong, where it is a rare surname, Singapore, and Finland, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in China, Hong Kong, and Malaysia. Predominantly, 智信 is the forename as well as the last name.