Siheyuan: I Sign in to Engage in Scientific Research and Slap Everyone in the Face

Lin Xiang traveled to the year 62 and came to the world of Qinman Siheyuan. As soon as I got home, I found that the house had been occupied by Mrs. Jia and several other beasts! I thought I would have to live a hard life in this era of scarce resources. Fortunately, I awakened the system and gained the memory of an intermediate engineer at the beginning and the memory of an eighth-level fitter. My status was improved! And this is just the beginning. From then on, electric fans, watches, radios... The ones I made myself were better than those sold! Mass production of synthetic meat, meal replacements, fertilizers and pesticides begins! Type 77, Type 81, radar... Familiar national defense equipment is available ahead of schedule! Lin wanted to fight animals, do scientific research, and make a confidante. Many years later, Lin Xiang, who was immersed in development, looked up and saw that the Dragon Kingdom had become a great power!