In the cultivation world, there is a peculiar phenomenon where many cultivators build their own caves in certain places. After practicing for a period of time, maybe a few years or maybe a few hundred years, they would leave and often seal away the things they no longer need inside, waiting for someone with fate to find them. This gives many low-level cultivators the opportunity to find a leftover cave or residence and reap many rewards.

Of course, there are also caves of cultivators that have been raided and destroyed, leaving behind many good things. Therefore, many people in the cultivation world like to explore and search for these leftover caves.

Generally, cultivators with sects will also explore these caves, but their main force is not them, but the rogue cultivators who are active in the wilderness. They are the main force in searching for leftover caves because they mainly rely on these to grow quickly.

Mi Xiaojing discovered a two-meter-long, palm-wide black strip that was as thick as a finger in a store that sold cultivation goods. It was just leaning against the corner of the wall. Of course, with his eyes, he couldn’t see through what it was, but he was curious and picked it up.

It was a heavy object, and it felt heavy in his hand. He curiously asked, “What is this?”

The store clerk was an ordinary mortal. He said, “Sir, this is something someone else has consigned. It costs five lower-grade spirit stones…”

Mu Xiaoyin was surprised and said, “Five lower-grade spirit stones, why don’t you just steal it?”

The clerk helplessly said, “This is consigned, and we can’t bargain. Either buy it or leave it.”

Mi Xiaojing just casually asked and was about to put it down when Wang Weijun suddenly popped up in his mind, “Buy it!”

“What about this black strip in my hand?”

“Yes, buy it!”

Although Mi Xiaojing didn’t understand what it was, since Wang Weijun said to buy it, he was moved. He knew that Wang Weijun was much more knowledgeable than him.

“I’ll take it!”

Mi Xiaojing happened to have five lower-grade spirit stones and put them directly on the counter. He casually put the black strip into his storage bag.

Although the clerk was an ordinary person, he also knew that people with storage bags were usually wealthy among low-level cultivators. This item was mostly owned by Foundation Establishment cultivators.

Mu Xiaoyin became anxious and said, “Hey, why did you buy it… What is this thing?”

“I don’t know what it is…”

Mi Xiaojing honestly said, but Mu Xiaoyin was stunned. She said, “Oh my god, you don’t even know what it is, but you spent five lower-grade spirit stones on it? Return it quickly!”

Zhang Ke didn’t say anything. He always knew that Mi Xiaojing was very smart and wouldn’t buy useless things.

Mi Xiaojing smiled and said, “It’s okay, I bought it already. I’ll study what it is when I get home.”Mu Xiaoyin opened her mouth but eventually closed it. After all, the spirit stones belonged to Mi Xiaojing, not her. She couldn’t help muttering to herself, “What a spendthrift, five spirit stones… such a waste…” She felt reluctant but couldn’t stop Mi Xiaojing, so she just kept complaining.

Mi Xiaojing couldn’t help but laugh. Seeing Mu Xiaoyin’s reaction, he thought it was a normal response for a girl.

Mu Xiaoyin knew that Mi Xiaojing had spent all his money on these five low-grade spirit stones. She didn’t know that Mi Xiaojing had made an agreement with Lu Yu and didn’t need to buy many things anymore. However, whether it was Mu Xiaoyin, Zhang Ke, or Luo Bo, they were all curious about the black strip that Mi Xiaojing had bought with the five spirit stones. It was worth five low-grade spirit stones!

Sitting cross-legged by the spirit spring, Mi Xiaojing held the black strip he had bought in the market on his lap.

“What is this thing? It cost me five spirit stones… that’s all my savings. If it’s useless, I’ll lose big time.”

“You fool… do you think I would buy something inferior? Five spirit stones… even if you add a thousand more, you can’t buy it!”

“Really?”

“Of course, would I make a mistake? What I chose, won’t be wrong!”

Wang Weijun arrogantly raised his head, but in Mi Xiaojing’s mind, he was just an old man in a green robe. He didn’t feel anything even when he raised his head high.

“But, what is this?”

“This is a Thunder Gang wood! It has been refined into a sword blank by someone, but… for some reason, it was not continued and a simple seal was placed on it.”

“Thunder Gang wood? What is it?”

Mi Xiaojing knew what a sword blank was, but he had no idea what Thunder Gang wood was.

Wang Weijun had been to many places, so he naturally knew what Thunder Gang wood was.

“It’s a specialty of the Yun Lei Star. There’s no other planet that has it. That place… cannot be entered without reaching Foundation Establishment stage, or you will be struck by lightning and die. Even on Yun Lei Star, it’s hard to find Thunder Gang wood, especially this one, which is a high-grade Thunder Gang wood.”

“This is the best material for refining magical weapons. If it is nurtured in the body, it can become a spiritual weapon.”

In other words, Thunder Gang wood could not only be refined into magical swords, but also further refined into spiritual swords. Most cultivators would try to obtain a spiritual sword after reaching Foundation Establishment stage. The power difference between a spiritual weapon and a magical weapon was like heaven and earth.

Originally, Mi Xiaojing wanted to find a magical weapon, a sword, as his weapon. But unexpectedly, he bought a Thunder Gang wood back, which was still an unfinished sword blank. He was overjoyed.

“How do I unseal it?””Four magical techniques and one incantation are all it takes to unseal it. It’s not difficult to learn.”

Since it’s so simple, there’s no need to pass it down.

Wang Weijun taught very seriously, and Mi Xiaojing learned very seriously. His fast learning speed and high comprehension made Wang Weijun extremely envious. He was a genius in cultivation.

Mi Xiaojing easily learned the four magical techniques and one incantation. After reviewing them slightly, he had a complete grasp of them and said, “Let me try.”

Mi Xiaojing easily demonstrated the variations of the magical techniques, and the incantation was even easier. As an evolutionary immortal, he paid the most attention to true words, which are similar to incantations. However, one is clear and the other is vague, and he controlled them extremely well.

With a light swipe of his hand and a flick of his finger, Mi Xiaojing completely removed the seal on the Thunder Gang wood. In an instant, there was a crisp sound, and Mi Xiaojing trembled all over.

He was electrocuted, but fortunately, the current was not too strong, only causing a slight numbness in his body.

Mi Xiaojing’s hair was loose and draped over his shoulders. In an instant, his hair stood up like the head of a mop.

Mi Xiaojing was not alone by the Lingquan. Two people were sitting around it, Zhang Ke and Luo Bo. When they saw Mi Xiaojing’s hair suddenly standing up, they were both startled.

Zhang Ke pointed at Mi Xiaojing and exclaimed, “Ah? Ah! Ahh… his hair… ah!”

Mi Xiaojing was confused and asked, “What?”

Luo Bo said, “His hair… stood up… so strange!”

At that moment, the seal on the black strip was completely lifted, and everyone saw the true face of the Thunder Gang wood.