Research on the defense of liaodong county during Qin and Han dynasties 并列题名：Research on the defense of liaodong county during Qin and Han dynasties Research on the coast defense of Shandong in the Ming and Qing Dynasties Research on the problem of registered population in Qin and Han dynasties 并列题名：Research on the coast defense of Shandong in the Ming and Qing Dynasties Research on the school of Zhu Xi in Liangzhe during the Song and Yuan dynasties 并列题名：Research on the problem of registered population in Qin and Han dynasties Research on the administrative system of Qin and Han dynasties research on the diverse fusion of the artificial design in Qin dynasty research on landscape prose in Tang and Song dynasties