Хуаянь
Sōtō Zen, like all of Zen, relies on the Prajnaparamita Sutras, as well as general Mahayana Buddhist sutras, such as the Lotus Sutra, the Brahma Net Sutra and the Lankavatara Sutra. Zen is influenced in large part by the Yogacara school of philosophy as well as the Huayan school.