Shimin, You're Still Awake? Let Me Teach You How to Build the Great Tang

Gu Ming accidentally transmigrates to the early Zhenguan era and obtains the Cities: Skylines System. As long as he binds himself to a lord, he can simulate and develop the cities under that lord's rule. “Who's the greatest lord in the land today? Who has the most territory?” “My neighbor!” Gu Ming discovered long ago that his neighbor was none other than Li Shimin, who was living under an assumed name. He'd been waiting... Finally, at the third watch one night, he couldn't take it anymore. “Knock, knock, knock!” “Knock, knock, knock!” “Shimin! Shimin!” “Uncle Shimin, are you asleep?” “Hahaha, I knew it. Shimin isn't asleep either. Come take a walk with me.” Ignoring the armed guards, Gu Ming grabbed the scowling Li Shimin and led him toward the street. I am Li Shimin, the current emperor. One day, that old Taoist Yuan Tiangang suddenly came to me and said I had a once-in-a-lifetime opportunity. If I found the man in question, I could become the greatest emperor of all time, someone no one in the past, present, or future could ever surpass. “Please teach me, sir.” That old Taoist Yuan Tiangang told me to observe a man named Gu Ming. I did, and watched him for a long time. Apart from being rather disrespectful in his words and actions, he was to my liking in every other respect, and seemed quite capable. That is, until the third watch one night, when Gu Ming knocked on my door for a full quarter of an hour... What the hell do you mean, “Shimin isn't asleep either”?