Save the world starting from the Lord of Mysteries

Chen Dao, a patient with DID and multiple personality disorder, died accidentally in order to save a patient who jumped from a building. By coincidence, his consciousness split and truly became an independent existence, and each of them traveled to another world.
Among them, the main consciousness Chen Dao has traveled into the Lord of Mysteries, and the Lord of the Old Ones is about to awaken;
The second personality, Zhou Jue, has traveled through a mysterious resurrection, and the source of the supernatural is looming;
The third personality, Wang Dong, traveled to the world of Zhe Tian, and the Supreme Being in the restricted area watched with eager eyes;
Since then, he has embarked on a path to save himself and the world at the same time...