Xia and Shang dynasty was the early phase of the development of dagger, and the use range enlarged to the foot with the change of the manner of the field operations.

The Sea Culture in Xia and Shang Dynasties;

According to some relative archaeological materials and documents,the bronze Gui discovered in Xia and Shang dynasties is a utensil used for pouring water or wine to irrigate the field when a sacrificial ceremony is taken place.