Why is the sword held by Guan Gong called the Spring and Autumn Sword?

Gong Guan is the representative of benevolence and righteousness since ancient times, and the Spring and Autumn period is Confucius and other Confucian schools talk about "benevolence and righteousness" of the period, so it is not surprising to say that Guan took the knife for the Spring and Autumn sword, the following is some information about the knife of Guan Gong, I hope to help you

Material: white steel, weight: 7.5 kg, 6 kg. kilograms.

Length: 2 meters, head length: 550mm

Head thickness: 4mm Shaft length: 1450mm

Shaft diameter: 27mm Knife width: 200mm

This is the history of some of the data, the history of Guan Gong knife weighs 82 kilograms, the reality is not possible to produce such a heavy