Research of Nirvana Written as Yan((七大))in Dunhuang(敦煌)Buddhist Scriptures
Nirvana is always written as yan((七大))in Dunhuang Buddhist scriptures,the writing form of yan((七大))same as the cursive script of yan(炎),just like yan(()),and the vulgar form of yan(炎)in the written documents of the past dynasties also basically the same as yan((七大)).In Buddhist culture the Tathagata and all living creatures beings enter Nirvana when they fate,so call Nirvana yan(炎),call Nirvana sutra yan(炎)sutra,Nirvana point yan(炎)point.People often use yan((七大))to record Nirvana in Dunhuang Buddhist scriptures,there were direct documentary evidence for this.