The image is a blackboard with white text written in Chinese characters. The text reads "After dominating the Shang Dynasty (16th-11th Century B.C.) Emperor Zhouwu granted titles and territories to princes of the same surname in a large scale. Being close to the outside of Chengzhou and Zongzhou's kingdom, both Guozhou's and Guooshu's feasts were fortresses (they are the emperor's brothers). The area which the Eastern Guo belonged to was also named "Tiger Jail". It was the east-end gate of Zhengzhou's state and also one of the eight passes surrounding Luoyi, the eastern capital of the West-end, which was the western gate of Fengguo. After moving to Sanmenxia, the Western Guo occupied a more important position, where there stands the traffic fortress-Hanggu pass and lies the key ferry of the Yellow River-Maojin Ferry protected by these vessel states, the Zhou Empire was there-fore consolidated." The background of the blackboard is white.