Siheyuan: Sacrificing Jia Zhangshi to Build a Rich and Powerful Future

Zhang Liang accidentally transmigrates to a courtyard-house world in 1961, and gains a System that rewards him for capturing beasts. From the start, he strikes a deal with the country and has Jia Zhangshi arrested. The System rewards him with a portal to another world. From then on, he leads the country in campaigns across other worlds, bringing unlimited resources to his homeland during a time of poverty. When food is scarce, the country's soldiers seize it in other worlds. When advanced weapons are lacking, unmanned worlds are filled with equipment that is a century ahead of the courtyard-house world. While the great powers of the world are busy developing air forces, the rabbits have already acquired jet engine technology from another world... When the Eagle's aircraft carriers take to the sea and swagger around the Pacific, the rabbits have already obtained more advanced antigravity technology from another world... While the great powers still think the rabbits are that same dirt-poor country... the rabbits have already fought across several other worlds and designated them as strategic reserves for their country. As several mushroom clouds rise during naval exercises in the South China Sea... the whole world is stunned... How can the rabbits be this strong?