Wei Yuan is famous for the landmark of the sea. When Lin Zexu put out opium and resisted Britain in Humen, he felt that officials and intellectuals at all levels knew nothing about the West, so he presided over the compilation of a History of Four Continents with less than 90,000 words. When Lin Zexu was sent to Xinjiang, he was entrusted with a comprehensive book on world geography and history. On this basis, Wei Yuan expanded other documents, books and periodicals collected at that time, and wrote many papers by himself. With the help of historical records of past dynasties, Shi Ma Zhi since the Ming Dynasty and Yi Tu Yi language at that time, he compiled 50 volumes of Guo Hai Tu Zhi. After revision and supplement, there are hundreds of volumes in Xianfeng two years (1852). It covers world geography, history, political system, economy, religion, calendar, culture and products. It can be said that it was an encyclopedia that introduced the west at that time. For the purpose of editing this book, Wei Yuan made it very clear in the preface of Atlas of the Sea. What is a book? What is said is: attack foreigners with foreigners, compensate foreigners with foreigners, learn from foreigners with foreigners, and control foreigners with foreigners. ?