敦煌变文中－ｍ尾字演变一例王新华－ｍ尾字韵尾消失的途径之一是变为舌尖音，而与－ｎ尾合流，这一变化发生于元明时期。元周德清《中原音韵》中唇音声母的－ｍ尾字已与－ｎ尾合流，至明末金尼阁《西儒耳目资》中，全部－ｍ尾字合入－ｎ尾已经完成。－ｍ尾消失的另一方式... An example of the evolution of -m tail in Dunhuang bianwen Wang Xinhua - One of the ways that the tail of a tail of tail m disappears is to become the tongue apex and to the -n tail. This change occurred in the Yuan and Ming Dynasties. Yuan Zhou Deqing “Central Plains rhyme” in the lip sound initials-m tail has joined the-n tail confluence, to the end of the Jinni Pavilion “West Jurchen headdress”, all-m tail into the-n tail has been completed. -m tail disappear another way ...