The development of northwest China in ancient times was mostly agriculture development, and the main way of agriculture development was chiefly Tuntian development ( have garrison troops or peasants open up wasteland and grow food grain ).
英
美
- 中國古代西北開(kāi)發(fā)主要是農業(yè)開(kāi)發(fā) ,而農業(yè)開(kāi)發(fā)的主要方式是屯田開(kāi)發(fā)。
