乌焉成马

Explanation: Wu, Yan, Ma shape similar words, after several private copies of the wrong. Similar means to transmit the text to write because of physical errors. 　　Usage: The main predicate; as the predicate attribute; containing derogatory 　　Source: "Zhou official joint one-day" funeral, the coffin decorated sewing Yan "Yan Han Zheng Xuan Note it is the book for the horse, Du Zichun cloud 'when the Yan'." Is an old proverb book written by three, Wu Yan into the horse. " 　　Examples: Qing Liu Xianting "Yang Guang Notes" Volume IV: "After three written words, ~."