Lin Jiufeng signed in this key after entering the Northwest Territory.

Although He knew that the key could open the Mountain Sea Realm, he thought that there were multiple keys necessary for entry.

But through his discussion with Miss Hong, Lin Jiufeng realized that the Mountain Sea Realm wasn't a mystic realm, but a hidden world.

Miss Hong looked at the key in Lin Jiufeng's hand.

Her beautiful eyes gradually stopped moving as she stared fixedly at it.

After a while, she asked curiously, "Why do you have that key?"

"It's just an unexpected spoil of war," Lin Jiufeng replied.

"You're the Child of Destiny of this era, right?" Miss Hong asked in shock.

Lin Jiufeng shook his head. "I'm just a young man with a dream."

Miss Hong didn't believe Lin Jiufeng's words.

She held the key in her hand and studied it carefully. Then, she said, "This is indeed the key to opening the Mountain Sea Realm! It seems that you really can solve this puzzle that has never been solved in the past few eras."

"Then where is the door to the Mountain Sea Realm?" Lin Jiufeng asked.

He wanted to open it.

"Right now?" Miss Hong asked in surprise.

"Yes!" Lin Jiufeng nodded.

"The spiritual energy of this world has yet to recover to its peak. You are the most powerful existence in this world right now, but you are only at the Boundless Realm. Have you thought about the repercussions of opening the Mountain Sea Realm?" Miss Hong asked.

Lin Jiufeng frowned. "You're saying that opening the Mountain Sea Realm is bad news for this world?"

"Of course!"

"If you opened the Mountain Sea Realm today, you would also release many powerhouses trapped from the previous eras into this world!"

"The abundant spiritual energy in that world means that their cultivation bases are extremely high. There will be a huge gap in strength between you and them that cannot be crossed. You are invincible in this world, but in the Mountain Sea Realm, you're not."

Miss Hong warned Lin Jiufeng.

Lin Jiufeng silently looked at the Mountain Sea Key.

"It's better if you follow me to the Heavenly Dao Sect first. I want you to think about it once we're there."

Miss Hong looked at the yellow soil that was being stirred up by the wind around them.

Then, she pulled Lin Jiufeng away.

Lin Jiufeng didn't refuse her offer.

He put away the Mountain Sea Key and followed Miss Hong to the Heavenly Dao Sect.

…

Lin Jiufeng and Miss Hong arrived at the current base camp of the Heavenly Dao Sect.

Oasis.

It was the place where Lin Jiufeng killed the Eighteen Bandits of the Northwest earlier.

The headquarters of the Heavenly Dao Sect was currently located here.

Lin Jiufeng directed a strange look at Miss Hong.

Since this was the base camp of the Heavenly Dao Sect, why didn't she bring him here as soon as the battle was over earlier?

Miss Hong was embarrassed.

She revealed a wry smile and explained. "I had no idea what your intentions were, so I didn't dare to bring you here earlier. Although I'm the only one who has awakened in the Heavenly Dao Sect now, I've also dug out quite a number of treasures from the Heavenly Dao Sect…"

"There are also some disciples here that are fated with the Heavenly Dao Sect. I'm currently their Teacher Master, but they are too weak. This is why I don't dare to expose this place to any third party."

Lin Jiufeng waved his hand in dismissal.

After hearing her explanation, he wasn't bothered about it anymore.

Both of them weren't even close to each other to begin with.

Therefore, it was natural for her to be on guard against him.

The Heavenly Dao Sect was very low-key in this ancient city in the middle of the oasis.

The Heavenly Dao Sect's headquarters was just a huge courtyard.

The number of people living in this courtyard could only be counted with two hands.

Miss Hong arranged an independent courtyard for Lin Jiufeng so that he could think about his intentions properly.

Then, she got busy with her own stuff.

Lin Jiufeng and the white cat looked around the courtyard.

"It's quite similar to the courtyard that we had from before."

The white cat jumped down and walked around the courtyard.

Lin Jiufeng nodded.

The courtyard was very simple, just like the one in the Cold Palace that he had lived in for decades.

Lin Jiufeng was used to such a living environment.

He sat on the chair, took out the key, and silently observed it.

This key could open a hidden world.

This was something that would shake the world even more than the recovery of the world's spiritual energy.

It could also be said that this key could open up a brand-new world where people could probably explore and live in.

The impact of this world could be imagined.

Lin Jiufeng didn't dare to make a rash decision.

Just as Miss Hong said, he needed to think about it carefully.

The white cat knew what Lin Jiufeng was thinking.

She didn't disturb him as she remained quiet by his side.

Night soon arrived.

Miss Hong paid him a visit.

She was now wearing a pure white dress.

Her bright makeup gave off a luster, completely different from the flirtatious look that she had during the day.

Miss Hong brought with her a few books.

"These are some of the books that I found about that hidden world. Take a look at them."

Miss Hong handed the books over to Lin Jiufeng.

Lin Jiufeng received the books and read through them carefully. He memorized some of the warnings inside and then placed them on the table. Afterwards, he looked at her and softly asked, "You don't want me to open the Mountain Sea Realm just yet?"

"Nope, I am hoping that you will open it right now."

Miss Hong shook her head and said something that surprised Lin Jiufeng.

Lin Jiufeng gave her a weird look.

"My senior brothers, sisters, teacher masters, and uncle-masters are all trapped in the Mountain Sea Realm. No one knows what happened to them. I want to find out just what exactly happened to them and that is why I want you to open the Mountain Sea Ream."

Miss Hong's words were sincere.

"But I can't persuade you to do such a thing, because the impact of opening the Mountain Sea Realm today is too great for this world. Just one terrifying existence emerging into this world from the inside will already become an extremely terrifying existence to the Yuhua God Dynasty and the people of this world." Miss Hong solemnly added.

Her heart wanted Lin Jiufeng to open the Mountain Sea Realm today.

But her brain wanted Lin Jiufeng to wait.

Wait until when the world's spiritual energy has recovered to its peak.

"What if—"

"What if someone can prevent those people from coming out into this world?"

Lin Jiufeng slowly asked.

"Who?"

Miss Hong looked at Lin Jiufeng in surprise.

"You?"

Miss Hong looked at Lin Jiufeng in puzzlement. "Can you?"

Lin Jiufeng smiled slightly.

A breeze brushed past his face as he softly replied, "I should be able to."

If he opened the Mountain Sea Realm, he would be able to receive a sign-in opportunity.

Naturally, his strength would rapidly increase upon signing-in.

"You… really want to open the Mountain Sea Realm today?"

Miss Hong took a deep breath and asked for clarification.

"Bring me to the entrance of the Mountain Sea Realm," Lin Jiufeng said.

Miss Hong looked at Lin Jiufeng. "Since you have decided, I will bring you there today."

Lin Jiufeng naturally wouldn't disagree.

He left the Heavenly Dao Sect's headquarters together with Miss Hong.

The white cat hurriedly jumped into Lin Jiufeng's arms.

Amidst the dark night of the Northwest Territory, in the Mountain Sea Realm, the yellow soil was no longer flying everywhere in the air. The violent winds had also calmed down.

The entire Northwest Territory became quiet.

Miss Hong didn't take Lin Jiufeng far away.

Their destination was also in the oasis.

At the center of the oasis was a huge underground lake that never dried up.

It moisturized the oasis that spanned hundreds of miles, therefore maintaining this only green color in the bare Mountain Sea Realm.

"There's a huge door at the bottom of this lake," Miss Hong pointed out and said.

Lin Jiufeng scanned with his divine consciousness.

At the bottom of the lake stood a huge door that was well-hidden from the eyes of everyone.

Ordinary people wouldn't discover it because it was covered by moss and seaweed.

If it wasn't for Miss Hong's words, Lin Jiufeng wouldn't have used his divine consciousness to scan the area and specifically look for a door.

[Do you want to Sign-In before the Mountain Sea Door?]

A line of words suddenly appeared in front of his eyes.

Lin Jiufeng looked up.

Daybreak came and it was time to—

—"Sign in!"

Lin Jiufeng decisively agreed.