Title: 北京延庆明代长城研究
Description: Yi Yanqing Xian li shi 3 nian de Chang cheng zi yuan diao cha shu ju wei ji chu, cai yong shi liao he shi di diao cha xiang jie he de fang fa, xiang xi jie shao liao Yanqing xian di qu Ming dai Chang cheng de li shi yan ge, bao cun xian zhuang, ying zao ji fa, chang cheng wen hua yi ji xiang guan jun shi zhi shi deng nei rong.
Subjects: History, Architecture, Antiquities
Places: Great Wall of China (China), China, Yanqing Xian (Beijing, China)
Time periods: Ming-Qing dynasties, 1368-1912