No More Learning

Referring to a statement at the end of Vô Ngôn Thông's biography that "[having lasted] up to now, the twenty­fourth year, dinh* suu*, of the Khai Huu* era (1337), the Zen tradition in our country started withhim,"27 Trân Van* Giáp suggests that the year 1337 can be           as the exact date of the composition of the Thiên Uyên.