Weird Invitation

The pitch-black envelope and the yellowed paper were all an invitation to death. If you accept it, you will step into deserted hospitals, dead ancient buildings, and remote villages, and face strange existences that ordinary people cannot imagine. Break the rules and die. If you fail to complete the task, you will die. Even if you carefully complete the entire journey, you may not be able to leave alive. No one knows who is behind all this, and no one knows whether a new life or deeper despair awaits after the last invitation. Do you dare to accept this invitation?