"Sir Su Chen, there are a total of 18 cities in the whole of 66 Leijö, including Thunder City. All of them are built around Thunder Mountain. It looks impenetrable, but I know a secret passage that we can sneak into."
"Don't worry. No one knows about this secret passage except for me. As long as we're careful enough, we should be able to enter Thunder Mountain smoothly."
"Sir Su Chen, it's here. I think the seal I set in the past hasn't been broken yet. No one should have found this place yet."
"We're out!
Sir Su Chen, Thunder Mountain is not far ahead! "
After a short rest, Su Chen set off. Under the guidance of Thundersnake, Su Chen and the other two quietly bypassed the blockades set by the major cities through an extremely secret passage and arrived in front of Thunder Mountain.
"Very good."
Su Chen faintly smiled. It seemed that keeping the Thunder Serpent alive was the right choice. If it weren't for this hidden passage, wanting to enter Thundercrash Mountain wouldn't have been so simple.
If he hadn't guessed wrong, then it wasn't just Thunderclap City, but the major forces of the other 17 cities had also received the news, and were madly searching for his whereabouts. But, they would never have imagined that he had already infiltrated Thunderclap Mountain, and their search was doomed to be fruitless.
"Sir Su Chen, since I'm already here, can you let me go?" Thundersnake pleaded with a fawning expression.
"No!"
Su Chen shook his head and refused flatly. He then said, "But I'm a man of my word. Since you helped me successfully sneak into Thunder Mountain, I'll naturally keep my promise and not bring you into Thunder Mountain."
After a pause, Su Chen ordered, "Alright, Kong, take him with you and leave. It's too difficult for you to enter Thunder Mountain with your current strength. It's better for you to wait for me outside."
"Here are ten Cyan Thunder Stones and a Storage Ring. Keep them well. If I still haven't met you in 18 months, you can leave directly. Don't worry about me."
18 months was the deadline for the mission. If he hadn't met up with the Heavenly Wolf Clan by then, then there was only one possibility, and that was that he had most likely perished in Thundercrash Mountain.
After all, Thundercrash Mountain was a danger zone; it was incomparably dangerous. The truth was, Su Chen didn't have full confidence that he would be able to escape unscathed. However, there were some risks that he had to take. If he blindly cowered, it would be difficult to make a breakthrough.
"Okay, Master. But forget the Cyan Thunder Stones. If Master doesn't come out, there's no need for me to return to Cosmic Elite Training Camp." Tianlang Zukong nodded and then shook his head.
If Su Chen had really fallen, then Tianlang Zukong would not want to return to Cosmic Elite Training Camp.
"Alright. If I come back alive, I'll naturally meet up with you. You just need to look after Thundersnake. If it makes any strange moves, kill it immediately. If I fall, kill it directly." Su Chen smiled. After giving his instructions, he turned and walked straight to Thunder Mountain not far away.
After taking a deep look at Su Chen's back, Tianlang Zukong carried Thundersnake with a bitter expression and returned the way he came. He planned to hide in this hidden secret passage for the next period of time.
Thunder Mountain!
Feeling the terrifying coercion surrounding him, Su Chen's eyes flickered with a strange light. He did not have much fear. Instead, he was excited and eager to try.
As soon as he walked into Thunder Mountain, the Cyan Thunder Lightning lingering at the foot of Thunder Mountain sensed him. It meandered and swam toward Su Chen, who had intruded.
In this regard, Su Chen had long expected it and had already thought of a countermeasure. A golden light flashed and a Golden Thunder Sword appeared. He grabbed it in his hand and fiercely slashed at the oncoming Cyan Thunder Lightning.
Crackle! Crackle!
Accompanied by the dense sound of thunder, the Cyan Thunder Lightning was smashed by the Golden Thunder Sword and turned into countless Cyan Thunder Power. Then, the Golden Thunder Sword quickly absorbed and integrated.
"It really works!"
A glint of excitement flashed in Su Chen's eyes. He could clearly feel that the power of the Golden Thunder Sword was gradually increasing.
The mysterious skill imparted to him by the Inheritance Mark did not disappoint him. Not only could he easily control the Origin Power of Gold, but he could also absorb and integrate the Power of Thunder. This was also the reason why he dared to venture into Thunder Mountain alone.
"Cultivate!"
Su Chen's eyes lit up. First, he found a hidden place at the foot of the mountain. He used the Golden Thunder Sword in his hand to dig a hole that could accommodate him. Then, he sat cross-legged on the ground and meditated.
Su Chen did not deliberately search for Thunder Stones. Anyway, after getting 50 Cyan Thunder Stones from Thundersnake, he had already completed the mission of the Cosmic Elite Training Camp. If he had the time and energy, he might as well use it for cultivation.
The reason why he chose to enter Thunder Mountain this time was actually because of the omnipresent and extremely dense Power of Thunder in Thunder Mountain.
Ten days.
After ten days, Su Chen frowned slightly and temporarily stopped cultivating. He lowered his head and carefully observed the Golden Thunder Sword in front of him. He saw that the Golden Thunder Sword was covered with dense and mysterious thunder patterns. They were connected and there was no space left.
"The power of this Golden Thunder Sword has been raised to the extreme. This is all I can do for the time being."
After studying it for a long time, Su Chen had a thoughtful look on his face. With his current strength and understanding and control of the Origin Power of Gold, it was simply unrealistic to want to increase the power of the Golden Thunder Sword indefinitely. It was already very good to be able to absorb and integrate so much Power of Thunder.
If he wanted to continue to improve the power of the Golden Thunder Sword, he could only wait for his strength to improve and his understanding and control of the Origin Power of Gold to become stronger.
There was another way, and that was to absorb and integrate the more powerful Power of Thunder through mysterious techniques. However, in that case, it was too risky. If he was not careful, he might not be able to cultivate the Golden Thunder Sword. Instead, he might lose his life. After all, Thunder Mountain was the most dangerous place in 66 Leijö.
Without any plans to advance rashly, Su Chen settled down in the hidden cave and continued to cultivate.
Since the power of the first Golden Thunder Sword had been temporarily raised to the extreme, he would condense the second Golden Thunder Sword!
Su Chen did not forget his Devil Fruit Mission. In order to unlock the seal of the third Inheritance Mark, he needed to condense at least ten real Golden Thunder Swords.
With a faint glow of confidence in his eyes, Su Chen urged the Origin Power of Gold in his body and successfully condensed a golden greatsword. Then, he operated the mysterious technique and began to absorb and integrate the Power of Thunder in Thunder Mountain to attack the second real Golden Thunder Sword.
While Su Chen was busy cultivating, he did not know that the outside world was in chaos.