Zhang De Ming transmigrated, but why is it that others who transmigrate have built-in system cheats, all sorts of lottery draws, stat boosts, gaining experience from killing, or at the very least, reaping rewards from their hard work? Why is it that for him, it's just a code editing tool, and he has to code everything himself? When his cheat activated, he saw the familiar code: if () {Cloud Rain Technique successful} else {Technique failed}. Zhang De Ming breathed a sigh of relief. Fortunately, as a senior programmer who died of overwork at his desk, Zhang De Ming declared, give me an editing tool, and I can code a world. No system? No problem, he will code one, he will mass-produce systems, and become the man behind the systems. PS: This novel is a Xianxia Xuanhuan story with a Sci-fi core...