In fact the entering-tone had vanished in the times of Wu-fang Yuan-yin in the large northern area.

There are 12 rhyme categories, 19 initial consonants in fact, and 5 tones apparently with entering-tone disappearing as the matter of fact in Wu Fang Yuan Yin.

Study on the Historical Development of Rusheng in Hunan Dialect;

Since Yellow River had changed its riverway, the old drainage area became a mixed zone characterized both languages, and also marked the boundary between the accents of Jiantuan and Rusheng.

Characteristics of Light Sounds and Pitch Pattern——A case from the tone sandhi of light sounds and entering tone in Nanjing dialect;

This article investigated the entering tone character of "Broad Rhyme" reflected in Liaocheng dialect.

The division of even tone into "Yin" and "Yang" and the existence of entering tone(Ru Sheng) reflect its faithful description of tones at that time.

It analyses the Uygur-Chinese diaphone literature and indicates that at that time Chinese characters with the entering tone has not completely dosappeared it can provide new information for nesearch on the entering tone in the 15th centary.

This paper has made a research on rhythms between the falling tone and the entering tone in the rhythm prose from the Qin Dynasty to the Southern and Northern Dynasties,and then made use of the theory of the falling tone coming from-s ending to analyze the reasons for rhythm between the falling tone and the entering tone and the phonetic system and era when-s ending wholly lost.

This paper inspects the different views of researchers on the entering tone of Zhongyuan Yinyun(中原音韵), and supplements the view that Zhongyuan Yinyun (中原音韵) didn t hawe the entering tone with inspecting comprehensively the entering tone in Arabian-Chinese diaphone literature in Huihui prescription(回回药方).