Super Island Master of the Tang Dynasty

Jiang Yujun once traveled through time and found himself on a huge island. In order to survive, he began to use his scientific knowledge to plant potatoes, sweet potatoes and other crops. Jiang Yujun, who always thought he had received a desert island script, suddenly discovered one day that he had traveled to the Tang Dynasty... And at the beginning he became the prime minister under Li Shimin, and an unprecedented prosperous Tang Dynasty began to be created from his hands!