Datang: I Became Li Shimin's Brother

Programmer Li Jiancheng died suddenly while working overtime, and when he opened his eyes, he became the prince of the Tang Dynasty - 90 days countdown to the Xuanwumen Incident! Wait, Li Shimin is going to shoot me to death next month? Father Li Yuan wants to destroy me every day? Are all the wealthy families betting on their second child? Li Jiancheng calmly turned on the system: the civilization engine started. First, he intercepted Hu Fangxuanling, then tricked Cheng Yaojin into learning calculus, and by the way opened a milk tea shop in Chang'an, and turned the Romance of the Three Kingdoms into a warning letter about fratricide. On the night of the Xuanwu Gate, Li Shimin led his troops into the empty Prince's Mansion, but he didn't know that the well water in Chang'an had been poisoned with Mongolian sweat... If you don't kill the second brother, you can just raise him; if you don't rely on guns, you can crush him economically. The Quyuan plow + the imperial examination system + the treasure banknotes of the Tang Dynasty made the aristocratic families cry; the horseshoes + the Mo Dao array + honeycomb rockets made the Turks doubt life. My name is Li Jiancheng, the best actor of the Tang Dynasty. On the surface, I am a loving father and a filial son, but behind my back, I am responsible for the industrial revolution. The people call me a saint, and the enemies call me a black heart - it's not a big problem, but I have to pay more. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.