一、吕祖谦提出的所谓“守内虚外”问题宋代三百二十年是民族矛盾剧烈发展的历史时代。它先后遭到契丹、党项、女真、蒙古诸族的攻击,从失去西北边陲之地,到偏安东南一隅,最后被蒙古贵族混一海内。严峻的社会现实,不能不激发一些爱国士大夫们的思考:这究竟是怎么一回事呢?在对这个重大问题的回答中,最值得注意的是南宋吕祖谦《历代制度详说·屯田篇》的见解。 First, Lu Zuqian raised the so-called “defensive” issue Three hundred and twenty years of Song Dynasty is a historical era of the vigorous development of ethnic conflicts. It has been attacked by the Khitan, the Party, the Jurchen and the Mongol tribes in succession, from losing the land in the northwestern border to the southeast corner of Kaohsiung and finally by the Mongol aristocracy. The grim social reality can not but inspire some patriotic doctors and doctors to think about it: What exactly is going on? What is most notable in answering this major question is the “system of historical records” opinion.