存在着争论，不论是二里头文化遗址的夏代。

There exists a debate as to whether or not Erlitou culture was the site of the Xia dynasty.

夏代在正月初一，商代在十二月初一，周代在十一月初一。

Took on the first day, the first lunar month shang dynasty in the month of December, the zhou dynasty beginning in November.

这样，夏代既不是“按地区划分国民”，也没有建立“公共权力”机构。

So there was neither "dividing nationals by area" nor "founding public power organization" in Xia Dynasty.

第六章，河洛与海岱地区夏代至早商早期文化的交流与影响；

The sixth chapter is the cultural communication and influences between Heluo and Haidai regions in Xia dynasty and early period of early Shang dynasty.

用贝类制作而成的钱币。贝币是早期中国实物货币之一，早在夏代就已开始使用。

Money cowry is made of shells. Money cowry is one of the China's coins, early in the Xia dynasty has been used.