Dong Xuefeng said: "Su Yi, it will take some time to set up the formation."

"It's okay, take your time."

As Su Yi spoke, he took out two pieces of ethereal stones and handed them to Dong Xuefeng.

"Then I'll start."

Dong Xuefeng took the ethereal stone and turned to enter the cave.

Su Yi was not very interested in the battle formation, so he did not pay attention to it. Later he talked to Guan Hua, "Senior, can you make the Eight Desolate Thunder Flame Stone into a magic weapon?"

The Eight Desolate Thunder Flame Stone is an attributeless mineral and is very suitable for infusing chaotic aura.

Once it is successfully built, its strength will inevitably soar again.

“It’s not a big problem.”

Guan Hua said, "Su Yi, what kind of weapon do you want to make?"

There are too many types of weapons, so Su Yi's opinion must be sought.

"sword!"

Su Yi didn't hesitate at all.

For one thing, he had always used a sword, so he was used to it.

Secondly, the trump card [Body and Sword as One] can only exert its maximum power when used with a sword.

"OK."

Guan Hua nodded and said, "But you can't use spiritual energy here, so I can't help you build it for the time being."

"No rush, we'll teleport the Demon Planting Tower here later and then we can enter the Demon Planting Tower to forge it." Su Yi said with a smile.

"Then there's no problem." Guan Hua's eyes lit up.

Later, Su Yi handed the Eight Desolate Thunder Flame Stone to Guan Hua, and then the two discussed alchemy.

Guan Hua is not only a great weapon refiner, but also a great alchemist. His experience and attainments in alchemy are obviously superior to Jiang Cheng's.

Su Yi also benefited a lot from the conversation.

Time flies and more than two hours have passed.

At this time, Dong Xuefeng walked out of the cave with a tired face and came to Su Yi. "Su Yi, the formation here has been arranged. Let's hurry to the Demon Planting Tower."

Su Yi looked at Dong Xuefeng and said, "Old Dong, how about you take a rest first?"

Arranging formations, like refining weapons and elixirs, is not only a technical job, but also extremely mentally exhausting.

There is only one formation master, Dong Xuefeng, in the rear base. It would be bad if he gets sick from overwork.

"Don't worry, I can hold on." Dong Xuefeng forced a smile.

Su Yi also wanted to get the Demon Planting Tower over as soon as possible, so he said, "Okay, let's set off now."

Then, the two of them walked outside the cobblestones.

Walking out of the passage, Su Yi squinted his eyes and scanned the area. Not finding the [Intelligent Battle Vehicle], he shouted, "No. 2!"

After a few seconds, a roar was heard in the distance.

The [Intelligent Chariot] and the red chariot came flying one after the other.

"Su Yi, what's the arrangement?"

Coming closer, the [Intelligent Tank] asked.

"No. 2, transform into flying form and head to the Demon Planting Tower." Su Yi gave the order.

"clear!"

The [intelligent chariot] quickly transformed into a flying vehicle, carrying Su Yi and Dong Xuefeng and flying rapidly towards the Houzhi Demon Tower.

On the way, Su Yi asked Dong Xuefeng: "Old Dong, do you know the Rainbow Eight Stone Formation?"

"I've heard of it. This is a very powerful defensive formation." Dong Xuefeng replied.

Su Yi continued, "Can you set up the Rainbow Eight Stone Formation?"

If Dongxuefeng came, there would be no need to trouble Niu Feibai.

Dong Xuefeng said confidently: "The construction difficulty of the Rainbow Eight Stones Array is not even as difficult as the Teleportation Array. As long as the materials are sufficient, I can naturally set it up."

"That's good."

Su Yi was overjoyed and said, "Old Dong, what do you think about setting up a rainbow light eight stone formation in the rear base?"