The protagonist travels to the fictional ancient times when troubled times first came to an end, and obtains a [reverse infrastructure system]. The goal of the system is to allow him to "enjoy life and promote social prosperity." The core rule is: the more "salty", "comfortable" and more "modern" his personal life is, the more "pleasure points" he gets, and the more materials and technical drawings that transcend the times can be redeemed (such as: cement, high-quality seeds, elementary machine tool drawings, etc.). Forced to enjoy: The protagonist just wants to lie down, but in order to enjoy better things (such as eating ice cream and taking a hot bath), he has to exchange items. However, the items exchanged are too large (he wanted to exchange for a piece of glass, but was given an introduction to the float glass production line). He cannot use it himself and can only use it to develop his territory.
Unintentional: He exchanged the "cement formula" in order to build a smooth road for himself (so that the carriage would not bump around). As a result, the road became viral among businessmen and attracted investment. In order to eat white rice, he exchanged it for "high-yielding hybrid rice seeds". As a result, he had to promote planting to conceal the source and feed the people in the fiefdom, and his reputation skyrocketed.
Pulling and gaming: The protagonist jumps repeatedly between "personal enjoyment" and "forced infrastructure". The court and various forces noticed this suddenly prosperous place, and the protagonist had to arm himself with the technology and materials exchanged to protect his "salted fish life."
