The Turmoil of the Southern Song Dynasty

Accidentally traveled through time, and obtained the encyclopedia system, which includes books, expansion packs, and videos. You can dig graves, mine, and buy real estate. It's just that it's a bit difficult to become an immortal. This world is too uneventful. I'd better fight for the world first, and wait until I see the mountains and rivers, and then I can study the cultivation of immortals...