Mahāyāna is one of the two major existing branches of Buddhism (the other is Theravāda). Mahāyāna also refers to the path of seeking complete enlightenment for the benefit of all sentient beings, also called "Bodhisattvayāna", or the "Bodhisattva Vehicle". In the course of its history, Mahāyāna Buddhism spread from India to various other Asian countries such as China, Japan, Korea, Vietnam, Tibet and Mongolia. The lectures about Mahayana Buddhism deal in particular with the arising of Mahāyāna in India, the main schools at the root (Madhyamaka and Yogācāra) and essential doctrines (śūnyatā, two truths, three natures, ālayavijñāna and Tathāgata-garbha, etc.), while the lectures regarding the major traditions (Chan, Pure Land, Tiantai, Esoteric Buddhism, etc.) can be found within the sections "Chinese Buddhism" and "Tibetan Buddhism". The lectures regarding Mahayana Buddhism shall give the students a general overview of the origins, nature, features and importance of Mahayana Buddhism and introduce to the main schools and doctrines.