Yue Ming of Qin Dynasty: Why is Tian Wen, the first in sword notation, in the hands of Qin Shihuang?

There are three kinds of swords: Shu Ren sword, vassal sword and Tian Zi sword. Fierce fighting, swaggering, sword dancing for Shu Ren. Take courage as the front, honesty as the foundation, virtue as the spine, and loyalty as the sword of princes! Taking the Seven Kingdoms as the front, the mountains and seas as the flowers, the five behaviors, the yin and yang as the opening, the spring and summer as the holding, and the autumn and winter as the line, chinese odyssey is the sword of the son of heaven. The Tianjiu Sword of Qin Shihuang Ying Zheng belongs to the Sword of the Son of Heaven, ranking first! Unique in the world, obedient in the world.