Over the past four hundred years, Zhang Hei often had strange dreams. It might be more accurate to say that it was a nightmare because he felt haunted by it. It was indeed a nightmare because he only saw blood everywhere, and it was no different from a massacre. Worse yet, he was the one who slaughtered everyone in those nightmares, and that was clearly what made him feel nauseous every time he had those nightmares.
Nightmares kept coming into his subconscious like reruns of boring dramas on TV. Unfortunately, the tragic drama that played out in his subconscious did not just come once or twice, but thousands of times during his life in this world for more than four hundred years.
Zhang Hei didn't have those nightmares every day, but even if it was only once a week or maybe once every two weeks, it was quite draining on him mentally. That's why he never got enough sleep for the past four hundred years, but then things started to change little by little.