By the middle of the Edo period, as Hongaku philosophy (philosophy of awareness) through oral instruction, which had started in the period of the Northern and Southern Courts (Japan), was becoming more prevalent, and Tendai doctrine and manners of priests had deteriorated markedly, he worked hard to correct the priestly ethic by reforming two types of learning, namely Jo (Samachi) and E (Wisdom), and introducing additional precept learning based on Shibunritsu (Four-Part Vinayapitaka, which explains about regulations and prohibited matters of the priests) in perceptive science.
江戸時代中期には、南北朝時代(日本)に始まった本覚思想の口伝法門が広まり、天台教学・僧儀の退廃が目立ってきたことから、定慧の二学を刷新し、戒律学における四分律兼学による律儀を導入するなど僧風の是正につとめた。