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Last name 治杰 (Zhijie , 治杰 ) , in all the world, is quite a rare cognomen. The last name 治杰 is habitual in Cayman Islands, where it is quite a rare surname, Taiwan, and Singapore, where it is a rare surname. In absolute terms, it most frequently occurs in China, Taiwan, and Spain. More prevalently, 治杰 is the forename as well as the last name.