Spy War? the Rise of the Great Warlords

Lin Dong was originally an entrepreneur on Earth. He accidentally ended up in the parallel world of Blue Star. In that world of blood and fire, he slowly grew into a great warlord. All he could rely on was a not very intelligent system and a small amount of knowledge. The IQs of the opponents and supporting characters in the story are online and have their own logic. They are not just paper people, nor do they have inexplicable overlord aura, charm, loyalty and the like. In the story, it is not about taking people to participate in various well-known battles, but trying hard to survive first. The main mission of the system is to survive. The system has its own purpose, which will be written out slowly in the future. It is not an inexplicable mindless support, and of course it is not evil, but a different dimension.