Residing in the Chuin (located outside the Naiin) of Mount Koya, Meizan drew a large number of monks wishing to learn jiso from him, due to his extensive knowledge of the hiketsu (esoteric secrets, namely, the methods of learning and protocols related to such methods) that had been handed down from the monk Kukai (Kobo Daishi) to Shinzen.
高野山の中院（弘法大師御住坊）に住して、空海（弘法大師）より真然に相承（受け継がれた）された秘訣（修法の方法や修法に関する決まりごとなど）に精通していたため、多くの僧侶が事相などの修学のために明算のもとを訪れたという。