As soon as they came out of the foggy area, Nightmare Ghost kept his promise and handed the cube-shaped key to Gu Ding. Gu Ding then released him from his mini world.

"Thanks, I finally don't have to stay in that godforsaken place anymore."

Nightmare Ghost took a deep breath after he appeared. Even though the air in the ruins was not very fresh, he seemed to be in a good mood.

"Do you want to come with us? Or should we split up and meet up again when the ruins open again? "Gu Ding asked Nightmare Ghost.

"I don't want to be enemies with the other Burial Grounds guys, and I really don't want to see that guy named Heinoas. So, let's go our separate ways here. "Nightmare Ghost stretched his back. It was obvious that he still had many habits from when he was a human.

"How do I contact you when the time comes?" Gu Ding asked with a smile.

"The ruins will be open for half a year, right? When the half a year is almost up, you can come back here and look for me, "Nightmare Ghost answered after thinking for a moment.

"Alright then, but don't get yourself killed by someone. After we get here, we can only wait for three days at most. If we don't see you in three days, we'll have to leave. "Gu Ding gave him a deadline.

"No problem, I'll be there earlier. Before the ruins open again, the entire ruins will react. As long as I'm not dead, I'll definitely see it. "Nightmare Ghost nodded.

"Remember, don't attack humans first," Gu Ding reminded him again.

"Understood. As long as they don't provoke me, I won't attack them first," Nightmare Ghost agreed readily.

"Good luck then." Gu Ding waved his hand and was ready to leave with Neptune and the rest.

"Wait!" Nightmare Ghost hesitated for a moment but still stopped Gu Ding. "There's something I need to remind you."

"Heinoas isn't easy to deal with. With the strength and size of your crew now, I'm guessing you'll just end up as food when you get there."

"Is Heinoas very strong?" Gu Ding frowned slightly.

"You should know that there are seven combat strength ranks for a tenth-rank Heavenly God, right?" Nightmare Ghost nodded. "If that guy becomes a revenant now, he'll at least be at the seventh combat strength rank — tenth-rank Great Perfection Heavenly God … Even if he's not a Lord, his combat strength should be infinitely close to that of a Lord."

"No way!" Gu Ding did not expect the Nightmare Ghost to give him such explosive news.

"Isn't Henoas a member of the Sea Tribe from the basic plane? Moreover, he died after exhausting his lifespan. How could he have such strength? "Mi Ke Ke asked in confusion.

"That big guy and I fought him before. At that time, he was already a perfect-stage Heavenly God, and his combat strength completely crushed us. Moreover, he also knows Main God Secret Skills and Main God Divine Abilities, "Nightmare Ghost explained.

"That Heinoas might have only left a clone in the basic plane … Therefore, the remnant records of the basic plane said that although he was a Heavenly God, his fighting strength was not high, and he died from the exhaustion of his lifespan." Melissa suddenly raised a conjecture.

"He hid his actual combat effectiveness and placed his burial ground here. What was his purpose?" Gu Ding could not understand.

"I don't know what his goal is. I only know that when I fought with him, we had some exchanges. At that time, he said that as long as he achieved Great Perfection and became a Lord, he would come back and release those of us who were imprisoned. If he didn't become a Lord, we could only be buried with him. "Nightmare Ghost still clearly remembered the conversation he had with Heinoas during the battle.

"He's so ambitious … He had to achieve Great Perfection before he would elevate to Lord …" Melissa frowned slightly.

"Now that he has fallen here, it's obvious that he failed to elevate to Lord. That's why you said earlier that he was at least a perfect-stage tenth-rank Heavenly God. "Neptune finally understood why Nightmare Ghost had said that.

"Yes, according to what he said, he wouldn't attempt to elevate until he reached perfect-stage tenth-rank. Since he has fallen, he must have achieved perfect-stage tenth-rank before he fell. "Nightmare Ghost nodded. "To be honest, I'm not optimistic about you. Until now, I still don't think you have the ability to kill Heinoas."

"Then why did you come to an agreement with us?" Gu Ding raised his eyebrows.

"The answer is simple." Nightmare Ghost could not help but laugh when he heard Gu Ding's question.

"First, although your attacks are ineffective against me, I can't do anything to you either. If you don't hand over the key, both sides will fall into a stalemate. Moreover, there are many of you, which is disadvantageous to me.

"Second, your abilities are the strongest I've met in years. If I miss this opportunity, I don't know how long I'll have to wait. Therefore, I chose to take a gamble.

"Third, even if you can't kill Heinoas in the end, at least I've escaped from that Burial Ground. I'm much freer than before.

"Fourthly, that key is worthless to me. Even if you give me all nine keys, I won't open Heinoas' Burial Ground. No matter how I look at it, handing over the key to you is a win-win deal. "

"Based on what you said, it shouldn't be difficult for us to get the other keys. Many people in other Burial Grounds probably have similar thoughts, right? "Mi could not help but ask after listening to this.

"Wrong! I'm probably the only one who has such thoughts. The other undead must have been enslaved by that guy, just like Big Guy. In fact, I was enslaved in the beginning, but I used some tricks to break free, "Nightmare Ghost explained.

"He's right. When I was fighting with you, Master, my consciousness was in a controlled state. There was an order in my mind that I couldn't defy — kill the outsiders and protect the Burial Ground key. That order only dissipated when the Dead Spirit Imprint was branded, "Big Guy nodded.

"No matter what, I'll stick to our previous deal. I'll wait for you here when the ruins open again. As for whether you can survive, it'll depend on your own abilities and luck, "Nightmare Ghost said and waved at Gu Ding and the rest. "That's all I can do to help you. I hope we'll meet again in the future …" The Nightmare Ghost waved at Gu Ding and the others.

As soon as he finished speaking, Nightmare Ghost's figure gradually faded away.

Gu Ding and the rest watched Nightmare Ghost disappear but did not leave immediately.

"According to what he said, do we really need to gather all the keys to open Heinoas' Burial Ground?" Neptune looked at Gu Ding.

"We'll talk about this later. Now, we need to improve the overall combat effectiveness of the team!" Gu Ding was not sure if opening Heinoas' Burial Ground was a good idea.