Enchin's denpo, which was combined with Esoteric Buddhism and Shugendo (Japanese ascetic and shamanistic practice in mountainous sites), had obtained official recognition by kugen, and that occasion is considered to be the foundation of the Sect by the Tendaijimon sect.
顕教、密教に加えて修験道を兼学する円珍の伝法は、これによって政府の公認を得たわけであり、天台寺門宗ではこの時をもって開宗とみなしている。