Huíjiào shì shìjiè shàng xìntú zuìduō de zōngjiào zhīyī.
Islam is one of the religions with the most followers in the world.
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回教 is an older Chinese term for Islam, historically used in mainland China and still common in Taiwan. The modern mainland standard term is 伊斯兰教. The Hui ethnic minority (回族) are predominantly Muslim, which is where 回教 derives its name.