Bind the System to Li Shimin at the Beginning

My name is Lin Feng. I am a time and space manager who specializes in issuing systems. The first host I bound to was named Li Shimin. Tang Jian: "Your Majesty, the Tang Dynasty is short of food now." "Don't panic, let me draw the lottery first! Yes! These are sweet potatoes, with a yield of three thousand kilograms per acre, and so are these potatoes!" Fang Xuanling: "Your Majesty, the Turks are about to reach Chang'an City!" "Don't panic! Empty the treasury and exchange the materials for gunpowder formula!" Feng Lun: "Your Majesty, there are no talents now!" "Let me personally check the attributes of these talents!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.