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Cognomen 忠 (忠 , Tong , Chung , among others...) , all around the world, is a widespread last name. The family name 忠 is habitual in Hong Kong, where it is a prevalent surname, Bermuda, where it is a widespread surname, and Macao (explore the name in all countries). In absolute terms, the name is most common in China, Malaysia, and Hong Kong. Likewise, 忠 is the forename as well as the last name.