| 1 | The Central-Plains culture takes root in the Central Plains of the middle reaches of the Yellow River and the Haidai culture takes root in the Haidai Region of the lower reaches of the Yellow River. | |
| 2 | During the recent five to six years, great progresses have been made in the archaeological study of the Xia, Shang and Zhou Dynasties in Haidai Area. | |
| 3 | According to some archaeological documents, there is close relationship between the Central Plains and Haidai Area. | |
| 4 | Shandong Longshan Culture is an important archaeological culture in Haidai region of the lower reach of Yellow River, which had played the role in the process of social civilization in Haidai region. | |
| 5 | Its very common to use figure 5 in 《Shuntian》, which, together with other literatures, reflects the culture phenomenon of using figure 5 by Yu Shun. |