Four teachings, doctrines, or schools; five groups are given, whose titles are abbreviated to 光天曉苑龍: (1) 光宅四教 The four schools of 法雲 Fayun of the 光宅 Guangzhai monastery are the four vehicles referred to in the burning house parable of theLotus Sutra, i. e.śrāvaka,pratyekabuddha, bodhisattva, and the final or one vehicle teaching. (2) 天台四教 The Tiantai four are 藏通, 別, and 圓, v. 八教. (3) 曉公四教 The group of 元曉 Wŏnhyo of 海東 Haedong are the 三乘別教 represented by the 四諦緣起經; 三乘通教 represented by the 般若深密教; 一乘分教 represented by the 究網經; and 一乘滿教 represented by the 華嚴經. (4) 苑公四教 The group of 慧苑 Huiyuan: the schools of unbelievers, who are misled and mislead; ofśrāvakas andpratyekabuddhas who know only the phenomenalbhūtatathatā; of novitiate bodhisattvas who know only the noumenalbhūtatathatā; and of fully developed bodhisattvas, who know both. (5) 龍樹四教 Nāgārjuna's division of the canon into 有 dealing with existence, or reality, cf. the 四阿含; 空 the Void, cf. 般若經; 亦有亦空 both, cf. 深密經; and 非有非空 neither, cf. 中論.