I Asked You to Guard the Border. What the Hell Is This Great Wall of the Galaxy?

After traveling through time and becoming the eldest son of the Great Qin Dynasty, Fusu awakens to the sign-in system and is told: If he is too strong, the world will change accordingly. Tianhu starts the game, as long as he doesn't fight to the death against the First Emperor, his position as the Second Emperor will definitely be secure. Ding, you gain the engraving and enlightenment skills! Fusu carved figures, followed by enlightenment, and beauties such as Yan Lingji, Zi Nu, Esdeath, Boya Hancock and so on were born. Ding, you get the Whispering Language! Hu Hai coveted it and broke his legs. Zhao Gao complained and had three legs broken. The great scholar came to instigate, and Fu Su persuaded the people with virtue, causing them to die on the spot. The First Emperor was furious and demoted him to the county to guard the border. Ding, you get one hundred thousand Snow Dragon Riders! Looking at the Xiongnu opposite, Fusu felt helpless. Is it because I don't want to keep a low profile? Strength doesn't allow it! Destroy it! Ding, the world is being promoted... … A few years later, the First Emperor wanted to retire and summoned Fusu back to succeed him, but he received a memorial: His son was building the Galaxy Great Wall at the border and would not be able to come back for the time being. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.