Within Mahayana, Chinese Buddhism has long maintained the fine tradition of vegetarianism. At present, the majority of Chinese Buddhists is vegetarian. They mainly abide by the teachings in two Mahayana sutras: the Lankavatara Sutra and the Nirvana Sutra. In a way, being vegetarian also exemplifies the Mahayana spirit of compassion.
[Excerpt from Luminous Wisdom Book Series 1: The Right View ~Why Vegetarian?]