Huang Zongxi is a great thinker and historian between the Ming and Qing Dynasties. He is knowledgeable in many disciplines, especially in history. He spent 26 years compiling 482 volumes of Ming Wenhai, a collection of Ming Dynasty articles, trying to preserve historical facts in the form of literature. More than 10,000 pages of this book were included in Sikuquanshu at first and later, when a review was made according to the emperor, some parts were deleted and replaced, resulting in deleted manuscripts which are now stored in Henan Provincial Library and included in national precious ancient books list. The existence of the deleted manuscripts proves that the rulers of the Qing Dynasty made arbitrary deletion of the books for the purpose of imprisonment. It also provides valuable first-hand information for the study of the compilation history of Sikuquanshu. Beside its own literature value and academic value, it is an important historical evidence.