Wujing Zongyao
A team of scholars worked from 1040 to 1044 to compile the "Wujing Zongyao" with the intent to collect all known military knowledge and to disseminate it to a wider government audience. Its chief editor, Zeng Gongliang, was assisted by the astronomer Yang Weide and the scholar Ding Du. After five years, the book was published with a preface authored by Emperor Renzong himself. Lorge remarks that Zeng Gongliang, the chief editor, was a government official rather than a military general, implying that the "Wujing Zongyao" was likely written for other government officials.