However, the religion as known today, was founded by Honen. He formulated the principles in 1175, following a retreat on Mount Hiei, he set up residence in the Higashiyama district, Kyōto (then called Heian-kyō) and began to teach. His teaching were further refined by Ryochu (1199-1287), the student of Bencho, who was one of Honen's main disciples.