This Emperor is Truly Overpowered

Li Si: "Your Majesty, with the six kingdoms vanquished and the four seas unified, the world now belongs to the Great Qin. For the eternal stability of the Qin dynasty, decrees should be implemented, the old scripts of various nations abolished, and the measurements standardized."Ying Zheng: "I want Qin language spoken wherever the rivers flow, and Qin law followed wherever the sun and moon shine."Wang Jian: "Your Majesty, as the world is now at peace, and the four seas are tranquil, this subject is of advanced age and wishes to return to his hometown to retire, please grant your Majesty's approval."Ying Zheng: "Old General, the path of conquest for Great Qin is the sea of stars and galaxies, do not let the annihilation of the six kingdoms, this small success, extinguish your ambition!"Meng Tian: "Your Majesty, the Hu and Di people come like the wind and leave like lightning. This subject believes that corvée labor should be conscripted to connect the Great Wall of Yan and Zhao into one, and build a fortress. In this way, we can attack when advancing and defend when retreating; this action will surely be a monumental achievement!"Ying Zheng: "Meng Qing, are you going to build a wall... in your own backyard?"