There are abundant You-Yin(又音) in Guang Yun. One kind we call it special You-Yin(又音), which has two phonetic notations, one hides in another word’s paraphrase by Zhi-Yin(直音), the other pronunciation shows by Fan-Qie(反切). The Chinese character which has this two kinds of phonetic notations we name it Yun-Zi-A(字A). The word which Yun-Zi-A(字A) hide in we name it Zheng-Yun-Zi (正字). The two phonetic notations are same in flection formally, so we say that Yun-Zi-A(字A) are all untrue You-Yin(又音) in the form. But if we link Yun-Zi-A(字A) with its Zheng-Yun-Zi (正字), we will find that there are two different situations in fact. Some Yun-Zi-A(字A) has true You-Yin(又音), the other has untrue You-Yin(又音).