Introduction 125 Part One:Huiguan's 慧觀 Five-period Classification Scheme 127 Part Two:Jizang's Criticism of the Five-period Classification and his Advocacy of the Equality of the Mahayana Sutras 130 Part Three:Points of Commonality between Huiyuan and Ziang 137 Part Four:Zhiyi's View of the Lotus Sutra 139 Part Five:Conclusion 145