The three of them turned their heads, only to find that the Spirit Tortoise Stone had suddenly disappeared.

Ding Yin took the lead in challenging Cao Cao: "Isn't the Spirit Tortoise Stone in your hands?" How did it suddenly disappear? You don't want to take it privately, do you? ”

Mozi also frowned and looked at Cao Cao, obviously agreeing with Ding Yin's words.

Cao Cao stomped his foot angrily and said loudly, "I can let you search your body, if you can find the Spirit Turtle Stone, I will leave you at your disposal." ”

He said so, Ding Yin and Mozi had to believe him temporarily, after all, Cao Cao's strength was still very strong, and if they fought, they might not be able to take advantage.

And Cao Cao was also thinking about the problem of the Spirit Turtle Stone, and he immediately thought of Liu Yu.

"The Spirit Turtle Stone must have been stolen by Liu Yu's kid, this kid can stealth the spell, I've seen it before, why didn't I think of it just now, chase it, maybe it's too late now."

When Ding Yin and Mozi heard this, it made sense, and they immediately followed Cao Cao and ran outside.

But no trace was found.

"This Liu Yu is really cunning." Mozi shook his head helplessly, he had used a lot of detection methods, but he didn't find any breath other than the three of them.

"Damn Liu Yu, let me meet him again, I must kill him with my own hands." Ding Yinqi's teeth itched, his series of plans were ruined by this kid, and he already regarded Liu Yu as a stumbling block.

"Can you beat him?" Cao Cao snorted coldly.

"I guess this kid won't return to Tianmen Mountain, he will definitely find a safe place to refine the Spirit Tortoise Stone, we must catch him before he uses the Spirit Tortoise Stone, otherwise we won't have a chance."

"And where can he go?" Mozi felt that what Cao Cao said was very reasonable.

However, he did not have any hostility towards Liu Yu, but admired his ability very much, and secretly made up his mind that even if it was a critical moment, he would not kill Liu Yu.

"Boundary card level." Cao Cao spit out these three words, and a cautious look flowed from his eyes.

Just as Cao Cao thought, after Liu Yushun walked the Spirit Turtle Stone, he flew towards the Jiepai Pass all the way.

Although he has the ability to deal with Cao Cao, Ding Yin, and Mozi at the same time, it will always take some time and there may be other variables.

And variables are what he doesn't like the most, and it's not Liu Yu's style to wander outside with a heavy treasure.

He had to use the Spirit Tortoise Stone Refining Weapon first, and then Cao Cao and the others would not be at the same level.

On the way, the sound of the system completing the task finally came out.

"Ding Dong, congratulations on completing the series of tasks to capture the spirit stone, and reward the host with a machine spirit with independent consciousness."

"Machine spirits? What is that? Liu Yu asked suspiciously.

"Refining is an uncontrollable thing, but as long as you have a tool spirit, the refining tool can greatly improve the success rate of refining according to the material and the ability of the instrument spirit."

"In the follow-up reward distribution, congratulations to Jiang Li for completing the task: 100 copies of the best Shennong Ding and 1000 copies of the millennium cold iron, 100 copies of the millennium Xuanbing, 100 copies of the millennium magnet, 100 copies of the millennium dragon tendon......"

With a top-grade refining tripod and a series of refining materials, coupled with the Spirit Turtle Stone and the Instrument Spirit, Liu Yu was sure that he would refine his Qingying Xuanguang Sword to a higher level.

Half a day later, Liu Yu finally flew back to the Jiepai Pass.

"You're back." Luo Qingyu rushed to see him as soon as possible.

"How's it going? Has the demon clan moved? Liu Yu asked with a smile.

"Hmph, do you think that I, the marshal, really eat dry food, plus the three generals Chilian, Zhuan Xuan and Qingya, what can happen? However, there are many demon clans who have come to defect, and now we have 20,000 more demon soldiers. ”

Luo Qingyu said very proudly.

"Very good, not bad, I knew you could do it, you call the three of them over now, I will hand over to you if I have an important task."

After the three of them arrived, Liu Yu took out the Spirit Turtle Stone.

"This is the Demon Clan's Supreme Treasure Spirit Turtle Stone, and it is now in my hands, but I need to retreat for a while to refine it, so I need you to guard it for me during this time."

Liu Yu looked at the four of them solemnly.

"You're not offending anyone, are you? Did you snatch it from someone else? Luo Qingyu looked at the Spirit Turtle Stone and asked.

Liu Yu just smiled and didn't answer.

The other three immediately knelt on the ground and said, "Crime, my lord, swear to complete the mission." ”

"Hey, it's serious, don't die easily, and find a way to protect yourself when you encounter an invincible opponent, understand? By the way, bring me your weapons, and if there are any remaining materials, I will help you refine them too. ”

Liu Yu said to the four of them.

This was a once-in-a-lifetime opportunity, and the four of them were very excited, and immediately handed over the weapon to Liu Yu.

"Okay, that's up to you."

Liu Yu made arrangements, and soon came to the underground secret room of the combat command room and began to retreat and refine the weapon.

And Luo Qingyu mobilized all the troops into the city, and the Jiepai Pass also began to strictly screen outsiders, and also implemented a curfew at night, looking like he was waiting for it.

Originally, Liu Yu thought that refining would be a boring and long process.

But I didn't expect that after he got the best Shennong Ding and the machine spirit, the process was very smooth.

He only needs to keep adding materials to the tripod according to the reminder of the machine spirit, which gives him time to refine the weapon while cultivating, and neither side is delayed.

Soon, the Qing Ming Xuanguang Sword was re-forged, and a stream of green light soared straight into the sky, causing the dark clouds in the sky to spin for it.

This change made the whole city notice, and Luo Qingyu's personal knew that Liu Yu was about to leave the customs.

It took less time to forge weapons for the four people, because the quality of their weapons was already lower, but this time they were all raised to the level of spiritual weapons, and it was not a problem to cut gold and jade.

When Liu Yu came out of the secret room, he had the temperament of a master.

This made Luo Qingyu look at him twice, as if he had reacquainted with him.

"This is your weapon, and now it is already a spiritual weapon, this is my trust in you, when I am away, you must guard this place, you know?"

Luo Qingyu and the other three turned weapons, and the smiles on their faces did not stop.

"Thank you, sir, you will be able to die." The four of them were half on their knees.

"Okay, then I'll leave it to you here, I have to go out, if there is any change on the demon clan's side, you can send me a message, and I will rush back as soon as possible."

After Liu Yu finished speaking, he walked out, and the demon soldiers who passed by stood up one after another, and they all knew that Liu Yu in front of him was an existence that made the demon clan extremely jealous.