The Research Method of the Division Project of the Xia, Shang and Zhou Dynasties and the Determination of the Western Zhou Dynasty

The division project of Xia,Shang and Zhou dynasties to determine the period of the Western Zhou Dynasty is an acceptable result through tens of discussions of experts by means of the advantages of history, archaeology,carbon isotope measurement of time and astronomy.This careful result may be revised later,but it will not be carried on by individuals as in the past.In order to determine the exact year of the downfall of the Shang Dynasty and the time of Su tomb, archaeological excavation has been done with special aims .Experts on the ancient bronze inscriptions have their latest research achievements applied in the calculation of division of these dynasties.