Is this what a zombie is?

Zombies, born from the resentment and filth of heaven and earth, are immortal and indestructible. Rejected by the three realms of heaven, earth, and humanity, they exist outside the six paths of existence. Wandering aimlessly, homeless and adrift, they use resentment as their strength and blood as their sustenance in the human world, venting their endless loneliness with the blood of countless beings. Jiang Chen pondered, are all zombies like this? Where did they learn these skills? Why don't I have them? Am I truly a zombie? Well, theoretically speaking, I'm not a true zombie yet, at most just a living dead. Although I still retain the habits of a living person, my body is uncontrollably decaying, marching towards death. Until a letter from a hundred years ago gave me hope for survival. To my past self a hundred years ago, when you see this letter, you should feel that you are beginning to turn into a zombie.