[Historical what-if + Infrastructure and farming + Political intrigue + The golden age of the Tang + Industrial Revolution]
Li Ping, an agricultural science PhD, transmigrates to the end of the Sui and the beginning of the Tang, and saves Li Yuan from pursuers right from the start.
Overjoyed, Li Yuan immediately adopts him as his sworn son and gives him the name Li Yuanping!
Li Ping is added to the Li family genealogy, becoming the only prince of a different surname in the Tang. Changsun Wugou refuses to marry anyone but him.
Li Ping is determined to be an easygoing prince, spending his days farming and inventing things.
Li Shimin has no money to fight the Turks? Go to Li Ping! No money to build a canal? Go to Li Ping!
With a portable farm at his disposal, Li Ping turns the Tang into a global superpower.
With every nation paying tribute, Li Yuan laughs from his dragon throne. “With Yuanping at my side, the realm has nothing to fear!”
A adopted son of Li Yuan keeps calling Li Shimin's father "invincible"