China ancient four-sided mace

Mace, a weapon in ancient China, is a short weapon with edges and no blades, which is generally used in horse fighting. Although mace has no blade, it is heavy and lethal. People can be killed alive even through armor, but it is because of its heavy weight that it is not very convenient to use. Generally, only powerful people can use it freely. There are many kinds of maces, such as four-edged mace, flat-edged mace, eight-edged mace, sharp-edged mace and so on.

Mace, an ancient weapon, was born between Jin and Tang Dynasties. Historically, Qin Qiong, a famous soldier in the early Tang Dynasty, and Niu Hao, a general in the Southern Song Dynasty, both used this weapon. Then, most of us have never seen this rumored ancient artifact. What is its power?