Zhao Chen, who traveled through the Tang Dynasty with his system, originally wanted to be a salty fish. When he had nothing to do, he farmed and fished. Unexpectedly, one day, a middle-aged man who called himself Lao Li suddenly came over and said that he would take Zhao Chen back to the palace to become the prince. Zhao Chen: Being a prince is boring. Why don't I provide the skills and you pay for it? Let's do blacksmithing at home first! Old Li Tou waved his hand: Blacksmithing is good, you need to exercise and you have enough money. Zhao Chen: Why don't we dig a canal? To benefit the people. Old Li Tou: Okay, give me the money. Zhao Chen, why don’t we pave the way...