The Super Island Lord of the Tang Dynasty

After transmigrating, Jiang Yujun finds himself on a vast island. To survive, he uses his scientific knowledge to grow crops like potatoes and sweet potatoes. Jiang Yujun always thought he was living out a deserted-island story, until one day he discovers that he has actually transmigrated to the Tang Dynasty... What's more, from the start, he becomes a chancellor under Li Shimin. An unprecedented golden age for the Tang Dynasty begins to take shape in his hands!