Great Tang: I Called Li Yuan My Big Brother, and Li Shimin Was Stunned

【Tang Dynasty, transmigration, farming, System】 Chen Ping'an, a dual PhD in agronomy and geology, transmigrates into the late Sui Dynasty. From the start, he saves Princess Pingyang, Li Xiuning, as she is surrounded by pursuers. With his peerless medical skills and the immortal ability to produce high-yield crop seeds out of thin air, Chen Ping'an becomes an honored guest of Li Yuan, who is raising an army in Taiyuan. After a few drinks, Li Yuan swears brotherhood with Chen Ping'an and names him the Tang Dynasty's only prince of equal standing who is not of the imperial surname. Li Shimin looks at Chen Ping'an, who is two years younger than him, and reluctantly calls him “Uncle.” Changsun Wugou often visits his residence to ask for help with mathematics. Chen Ping'an has a simple ambition: to become the Tang Dynasty's biggest landowner and monopolize all the business under heaven. Li Jing wants to fight the Turks but has no money? Chen Ping'an waves a hand. “I'll cover all the military expenses, on the condition that you let me fence off that grassland in the north and raise sheep!”