How Can I Cultivate Immortality Without a System?

When he went out to get lucky, Liu Tianlin died on the spot. When he opened his eyes again, he traveled to a fantasy world and was bound to a dog system that could eat in and out. Won't you let me practice sword practice? I have to practice! Don't you want me to learn other exercises? Do I have to learn? Don't let me do it? Do I have to do it? No? Are you a fucking system? Doing everything? Ah? It's really not a system…