Xiao Yan, a master of modern engineering and chemistry, fell into a pile of drawings while staying up late to catch up on a project, and then opened his eyes and became the fourth prince of the Yong Dynasty.
The Dayong Dynasty is a bit interesting - it was martial in its founding, and peaceful in the middle period. There was no need to worry about minor disturbances from all directions, but the life was too "primitive": the summer was so hot that the emperor's father (Xiao Chengye) fanned himself, and ice storage in winter was ridiculously expensive; road construction relied on rammed earth, which turned into mud puddles when it rained; the salt that the people ate was bitter and astringent, and it was even more extravagant to drink iced drinks.
Xiao Yan looked at the second emperor brother (in charge of the household department) who was busy fighting for the throne and the third emperor brother (in charge of the military department) who was training troops and horses, and silently dug out the knowledge base of Xueba:
"Come here, mix the saltpeter and water in proportion and give your father a bowl of frozen cheese!" - Su Yu, the first champion in an innovative science, was shocked: "Your Highness, is this 'summer ice-making technique' an immortal technique?"
"Pass this king's order, lime + clay + iron ore powder, and bake cement according to the formula!" Xiao Ce, the third emperor's brother, came with soldiers and horses to help: "Fourth brother, this 'cement' for building city walls is ten times stronger than blue bricks. The defense of the northern border depends on it!"
"Go and get the coarse salt, wash it repeatedly with well water, and then boil it in an iron pot!" - The people tasted the fine salt and called it "fairy salt". Xiao Jin, the second emperor's brother, handed over the funds overnight: "Fourth brother, expand the number of fine salt workshops to ten, and the Ministry of Household Affairs fully supports it!"
Later it got even more outrageous:
He used cane sugar, herbs, and sparkling water to make "Royal Coke", and the five princesses chased after each other holding the bottle;
He drew plans to build a commercial street with drainage, and nobles crowded in to rent shops;
He taught farmers how to use curved shaft plows and build water conservancy, and the yield per mu of rice fields in the suburbs of Beijing doubled;
Even the envoys from the Western Regions came here for the cement he made.
