However, the previous literatures did not understand the development of agricultural production in pre-Qin, and could not realize the meaning of every stage of early civilization, especially the meaning of the bronze era of Chinese civilization.

• 由于前贤们对先秦农业生产方式的发展阶段缺乏理解，不能真正洞悉文明早期各个时代的意义，尤其是青铜时代的意义。