The Problem Stated 301 1. The Distinction Between 'Interlinear' (zhu) and 'Exposition of the Meaning' (yishu) forms of Commentary, and the Evolution from the 'Interlinear' to the 'Expository' form in Chinese Buddhist History 302 2. One of the Oldest Surviving 'Explanation of the Meaning' Commentaries: Daosheng's Miaofa lianhua jing shu 307 3. The Dapan niepan jing jijie and Fayun's Fahua yiji 312 4. The Commentaries of Jingying Huiyuan 315 5. The Commentaries of Zhiyi and Jizang 317 6. Conclusion 319