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Surname Laih (厉 , ไหล , Laih ) , throughout the world, is a widespread cognomen. The last name Laih is habitual in China, where it is quite a common surname, Taiwan, where it is a rare surname, and Myanmar, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in China, Taiwan, and Indonesia. Very seldom, Laih is the forename as well as the last name.