There is also a large Chinese commentary by Woncheuk, a Korean student of Xuanzang which cites many sources with differing opinions. Large sections of the original Chinese have been lost, and the only complete edition that survives is in the Tibetan canon. According to Powers, "The text is a masterpiece of traditional Buddhist scholarship that draws upon a vast range of Buddhist literature, cites many different opinions, raises important points about the thought of the Sūtra, and provides explanations of virtually every technical term and phrase."