在甘肃库木塔格沙漠边缘，玉门关西北约５公里处，至今还保存有一段长不及百米，高不及３米的古长城。这段用芦苇和黄土构筑的墙体，是目前全国保留最完整的一段汉代长城。这段长城没有采用一块砖石，全部用疏勒河沿岸的野生芦苇和黄沙土一层层夯压而成。因为降水量少，气候十 At the edge of the Kurume Tagar Desert in Gansu, about 5 kilometers northwest of the Yumen Pass, there is still preserved an ancient wall less than 100 meters long and 3 meters high. The wall built with reeds and loess is the Great Wall of the Han Dynasty, which is currently the most preserved in the country. This section of the Great Wall did not use a brick, all with the Shule River along the coast of wild reeds and yellow sand soil rammed together. Because of less rainfall, climate ten