Chūzan ［仲算］ (n.d.): A priest of the Dharma Characteristics (Hossō) school in Japan. He studied under Kūsei at Kōfuku-ji temple and excelled in debate. In 963, when Emperor Murakami summoned learned priests from various schools for religious debate, Chūzan challenged the priests of the Tendai school, but the debate ended in a draw. For his performance, however, Chūzan received a reward from the imperial court and enhanced the prestige of the Dharma Characteristics school. In 969 Chūzan went to Kumano, a mountainous area that was regarded as a sacred site, Kii Province, and lectured there on the Heart Sutra near the Nachi Falls. Some sources regard his dates as 935–976, and others as 899–969.