这是一块印鉴着中国文明发展征程的土地。东晋时,曾为匈奴贵族赫连勃勃建立的“大夏国”国都;还有让后人惊叹的秦、明朝长城遗址;一道曙光划破天空,毛主席、周恩来等老一辈无产阶级革命家转战陕北在这里生活战斗46个日日夜夜酝酿了新的时代。这就是陕北要塞—— This is a land that seals the development of Chinese civilization. In the Eastern Jin Dynasty, the capital of the “Great Summer Kingdom” once established for the Huns nobles Helianbo; there are ruins of the Great Wall and the Ming Dynasty in the Ming dynasty; a dawn cut across the sky, Chairman Mao, Zhou Enlai and other older generation Class revolutionaries fought in the battle here in northern Shaanxi fighting for 46 days, nights and nights brewing a new era. This is the northern Shaanxi fortress -