Rise of the Otherworld.

Lin Xiaotian took out a jade pendant from his arms and placed it on the stone door. The runes on the stone door suddenly lit up, and then the stone door slowly opened.

An ancient breath came to their faces. Lin Yu and Lin Xiaotian walked into the ancient tomb. They saw that the tomb was gloomy and terrifying. The walls were inlaid with night pearls, emitting a faint light.

"Be careful, there may be a trap here." Lin Xiaotian reminded.

Lin Yu nodded and walked forward cautiously. Suddenly, a trap appeared on the ground. Lin Yu jumped away quickly and countless poisonous arrows shot out from the trap.

"That was close!" Lin Yu secretly rejoiced in his heart.

Lin Xiaotian also avoided the trap. He looked at Lin Yu and said, "Are you okay?"

Lin Yu shook his head and said, "I'm fine."

The two continued to move forward, encountering many traps along the way, but they resolved them one by one. Finally, they arrived at the depths of the ancient tomb, and saw a huge sarcophagus placed in the center.

"Is this the coffin of the ancient strongman?" Lin Yu asked.

Lin Xiaotian nodded and said, "Yes, what we are looking for is inside this coffin."

Lin Yu was secretly surprised. He didn't know what Lin Xiaotian was looking for that would require him to take such a big risk.

"How do we open this coffin?" Lin Yu asked.

Lin Xiaotian smiled and said, "There is a mechanism on this coffin. As long as we find the mechanism, we can open the coffin."

Lin Yu nodded, and he began to look for the mechanism carefully. Finally, he found a raised button at the bottom of the coffin.

"Found it!" Lin Yu said excitedly.

Lin Xiaotian also came over. He looked at Lin Yu and said, "Press it."

Lin Yu took a deep breath and pressed the button. The coffin lid slowly opened, and a powerful breath rushed towards them. Lin Yu and Lin Xiaotian were shocked by this breath and retreated repeatedly.

"What is this?" Lin Yu asked in surprise.

I saw an old man lying in the coffin. The old man's body exuded a powerful aura, and he was holding a jade box in his hand.

"This is what we are looking for." Lin Xiaotian said.

Lin Yu nodded. He looked at the old man and was secretly surprised. This old man was actually an ancient strong man. How strong was he?

"Let's take the jade box away." Lin Xiaotian said.

Lin Yu nodded, he walked forward cautiously and picked up the jade box. The moment he picked up the jade box, the old man's body suddenly turned into a ray of light and disappeared.

"What's going on?" Lin Yu asked in surprise.

Lin Xiaotian smiled and said, "This old man is dead. His body is just a shadow, and his soul has been sealed in the jade box."

Lin Yu nodded. He looked at the jade box in his hand and was secretly surprised. What secret was hidden in this jade box?

"Let's go." Lin Xiaotian said.

Lin Yu nodded, and he followed Lin Xiaotian out of the ancient tomb. As soon as he came out of the ancient tomb, Lin Xiaotian couldn't wait to open the jade box, only to see an ancient book in the jade box.

"What is this?" Lin Yu asked.

Lin Xiaotian smiled and said, "This is an ancient secret book that contains a powerful technique."

Lin Yu was secretly surprised. He didn't know how powerful this ancient secret book was.

"This secret book is very important to me. I want to take it back and study it carefully." Lin Xiaotian said.

Lin Yu nodded. He looked at Lin Xiaotian and was secretly surprised. He didn't know why Lin Xiaotian did this.

"Don't worry, I won't treat you unfairly." Lin Xiaotian said.

Lin Yu smiled and said, "I don't need any reward, as long as I can help you."

Lin Xiaotian nodded. He looked at Lin Yu and felt secretly grateful in his heart.

"Let's go." Lin Xiaotian said.

Lin Yu nodded, and he followed Lin Xiaotian out of the mountains.