"I never expected that a remnant soul of a demon would be hiding in this black stone. If I hadn't encountered it, other martial artists would probably have had a hard time escaping the fate of being possessed."

The black stone had indeed broken into several small pieces, but it was probably no ordinary object. Let's keep it and see if it'll be useful later.

But what excited Chen Feng the most was the new storage compartment on the back of the mortgage panel. It had enabled the storage function and had 10 compartments at once.

Chen Feng tried to put the things in his room into the storage compartments. He found that even the bed could be put away directly, and it only occupied one compartment, turning into a bed symbol.

In addition, other items can also be stored in the storage compartment, but different types of items will be stored in different storage compartments, while the same type of item will appear in the same storage compartment.

"Haha, aren't these storage compartments on the panel like portable space? With these storage compartments, it will be much more convenient to do whatever I want when I go out." Chen Feng was overjoyed.

After going in and out of the room and trying things out for a long time, Chen Feng finally cleared everything out, putting only the few small black stones into the storage compartment. Then he put all the flying needles, the certificates and contracts for his three houses, and his various other documents into the compartment.

Looking at his array technique, which was about to reach the ninth level of perfection, Chen Feng thought for a moment and decided not to spend his cultivation experience to improve it for the time being. Instead, he planned to slowly digest the array knowledge in the future. He estimated that once he had mastered all the array knowledge, he should be able to naturally advance to the eighth level of array master.

Chen Feng immediately went to the martial arts website to search for array masters, but found that there were only a few posts introducing related content. After reading them carefully, he discovered that the number of array masters among the human race was extremely small, and array masters had to be mental cultivators, making them very difficult to train. Each one was a treasure of the human race.

Therefore, once universities discover students with talent in formations, they immediately protect them and prevent them from going to the battlefield. Instead, they study formations in the rear, try to set up various formations, and provide mature formation support for the front line.

Therefore, there are no resources related to formations for sale on martial arts websites. If Chen Feng wants to study formations, he can only buy materials himself and study them secretly.

The materials involved in the formation include not only the energy cores of wild beasts and alien races, but also their bones, as well as various ores, natural crystals, plant materials, and so on. It can be said to be all-encompassing.

In particular, the higher the level of the formation, the more advanced the materials required. Formations of level six and above even require special treasures produced by other races in the starry sky, which are very difficult to obtain.

However, the knowledge of formations at the ninth level of mastery includes not only various basic knowledge of formations, but also detailed knowledge of the three most basic formation arrangements: defensive formations, illusion formations, and concealment formations.

The materials required for these three formations are different, but they are all common wild beast bones, crystal cores, common metal ores, wild beast blood with energy, and so on.

"These materials should be available in the market. When I go out to buy ingredients today, I'll buy some to study." Chen Feng made up his mind and then called Zhou Ping to go out with him.

After eating a bowl of noodles outside the residential area, the two walked for about ten minutes to reach the market. Chen Feng then asked Zhou Ping to buy some common ingredients, and the two went their separate ways.

After they parted ways, Chen Feng went to buy wild beast meat and blood. He happened to buy extra wild beast blood and bones, and also bought some other materials for setting up formations, storing them all in his storage compartment.

In the short term, Chen Feng does not plan to reveal that he is a formation master, nor does he plan to let Zhou Ping know that he knows formations. He will secretly study formation knowledge and the three basic formations.

"Brother Ping, have you bought everything? Is there anything else you're missing?" When the two met up, Chen Feng only had the various materials needed to make the spiritual food left in his hands.

"Brother Feng, it should be fine, right?" Zhou Ping said, and the two checked the various materials before returning to their residence.

As he walked, Chen Feng suddenly turned around and looked to his left. He noticed that there seemed to be some figures in black retreating in the crowd, and they had a faint, sinister aura about them, much like those cultists.

"Brother Feng, did you see someone you know? Or a beautiful woman?" Zhou Ping asked him with a smile.

"Oh, I think I saw someone I know, but it's not him," Chen Feng said casually, but inwardly he was worried that some cultists might really be targeting him.

However, the security in his residential area was quite good, and the police station was very close by. Police officers were frequently patrolling the area, so he estimated that the cultists wouldn't dare to come directly to him. Therefore, they would probably attack him when he was out.

"We should find an opportunity to cooperate with the patrol police again, lure these cultists to a remote place, and then wipe them out in one fell swoop," Chen Feng thought to himself.

"Officer Zhang, when I was shopping at the market today, I noticed a cultist following me. I could sense his presence." After returning home, Chen Feng immediately sent a message to Officer Zhang at the patrol station.

"Teacher Su, when I was shopping at the market today, I noticed that a cultist was following me. I could sense his aura." Not only that, Chen Feng also sent a message to Teacher Su Qing.

"Don't worry," Teacher Su Qing replied immediately.

"Understood, we will make the necessary arrangements," Officer Zhang replied after a while.

Chen Feng was immediately relieved. It seemed that there must be strong people from the Martial Arts Department and the Education Department secretly following him. The police station didn't have many experts, so they could only solve some minor problems. If they encountered strong people among the cultists, they would have to rely on the strong people from the Martial Arts Department and the Education Department.

However, Chen Feng was still confident in his strength. If the evil god cultists only sent eighth and ninth-level martial artists, then he had nothing to fear, since he currently only possessed C-level martial arts skills.

No, the defensive martial art Iron Shirt is only D-level. Chen Feng immediately selected a C-level defensive martial art, Golden Bell Shield, on the martial arts website, spending 300,000 yuan. Just two hours later, a martial artist from the martial arts department delivered it to his door.

That evening, after completing his various cultivation practices, Chen Feng spent some time familiarizing himself with the knowledge of formations, and then began to study the Golden Bell Shield. With the foundation of Iron Shirt, the experience of the same defensive martial arts techniques could be transferred, and in just three days, the Golden Bell Shield was entered into the panel.

"In about two or three days, after the Golden Bell Shield has absorbed the experience of the Iron Shirt technique, it can directly improve with cultivation experience. At that time, my last weakness will also be filled." Chen Feng decided that once the Golden Bell Shield martial arts technique is perfected, he will implement his plan to lure the snake out of its hole.