Arknights, but RTS

[Classic orphan template + system + no heroine (the author doesn't know how to write at all) + happy side + shot] A decadent young man named Ling He accidentally traveled to this land of suffering, and unexpectedly acquired a system with a serious illness. We will wait and see what kind of story he will write on "this land". This is the author's debut novel, and it is my first time to write a novel. There may be many things that make you dissatisfied. I hope you can help me point them out. I love you.