Kaihōgyō – The Thousand Day ‘Marathon’ of the Mount Hiei Monks!

Tendai sect of Buddhism is part of Mahayana Buddhism.  Its main monastery is on Mount Hiei called the Enryaku-ji.  This monastery was established by Saichō [https://en.wikipedia.org/wiki/Saich%C5%8D] or called Dengyō Daishi.  He was the monk who re-established Tendai practice from China to Japan.  In