Siheyuan: I eat melons while doing scientific research

Gao Zhendong traveled through the world of "Siheyuan". When he arrived in Siheyuan, he was of good family background, strong and healthy, with regular features, came from a military background, had made many military achievements, studied in university, had skills in hand, had plenty of cash, and had a system in place.
He has knowledge from his past life before he crossed over, a system to provide material support, and more future wisdom that comes from the occasional lottery.
He didn't want to spend his days thinking about trivial matters, but wanted to contribute more to this era of vigor and vitality, so that at least when he was old, he could say to himself: "These two lives were worth it."