This ender alloy is the rarest material, even in the universe, and is said to have some mysterious special properties. It's a pity that Chu Yun's blacksmith skills are not enough, and that's all he knows.

Chu Yun estimated that this ender alloy should also be obtained by ancient people from meteorites, and he didn't know what was put in it, but it was actually preserved in such a precious box.

"With my blacksmith skills, I can't open this box without the cooperation of advanced tools, which is a problem." Chu Yun originally thought that it was just a stone with a little toughness, but now he was helpless.

"System, is there any way to open the treasure chest?" Chu Yun finally chose to ask for help.

"Consume a hundred Silver Soul Coins to exchange for a one-time master key to open the treasure chest."

"Consume ten Golden Soul Coins to obtain the ender alloy forging method."

Chu Yun's eyes lit up, there were too many things in the system mall, he couldn't read them at all, he didn't expect there to be such a convenient thing.

"Can you open the treasure chest first, and I'll go back and return you one hundred and fifty Silver Soul Coins?"

“……”

Chu Yun felt that this system was really impersonal, and he had no brains, and he didn't know how to take advantage of such a good opportunity to sit on the ground.

However, Chu Yun was naïve, if the system really had this kind of IQ, Chu Yun would have been played with by others a long time ago.

Golden soul coins are more difficult to obtain, but silver soul coins are relatively easy, and Chu Yun now just wants to see what treasures are stored in them.

"Titan, put it away first, and then figure it out when you get back to the ship. I'll sleep here tonight. ”

Hearing this, the titan integrated the treasure chest into his body, and his body couldn't help but be a little taller.

"By the way, Titan, can you replace your core? The material of this treasure chest is very rare, and it is rare in terms of strength and particularity, so it may be better if you can replace the core with this. ”

Chu Yun and Titan talked about the core that he was now able to grow quickly, which Chu Yun called the hormone core.

Although this thing allows the Titan to grow quickly and recover quickly when injured, it has a fatal drawback.

It's a good thing to grow fast, but the end of growth is the end of life, and this core gives the Titan some abilities while also shortening his lifespan a lot.

The Titan shook his head regretfully and said, "By the time I completed my final evolution, that core would have become my heart. ”

Chu Yun's eyes lit up when he heard this, but he knew that there was someone who was very good at heart surgery, and he didn't know if he could help the Titan replace the core.

"Captain, thank you for your kindness, but even if the other party has the ability to do it, the treasure chest is only a treasure chest after all, not the core, and it can't be replaced." The Titan regretfully interrupted Chu Yun's fantasy.

"This doesn't have to be ......" Chu Yun didn't say much, some things will naturally be known later.

His Marketplace lists thousands of different ways to craft Titan Cores, which means that Titan Coress are indeed interchangeable.

If Chu Yun has the conditions, he can make more than a dozen of them, and when the time comes, he will pull the roller on the boat, and he doesn't want to change which one for the other.

Even without Luo's help, the system can redeem a way to replace the core.

Of course, this is only Chu Yun in YY, the core is so easy to replace, even if it is just replaced once, it will cause some damage to the Titan, and it will take a while to recover.

"Captain, that statue doesn't seem to be bad, do you want to take it with you?" Rhoda said, pointing to the statue with his eyes still glowing.

Chu Yun's heart moved, and he came to the statue and touched the two eyeballs with his hand.

"Discover the prism."

Since the opening of the system mall, as long as something slightly better is touched by Chu Yun, the system will prompt.

"These two are good things, they can be used as weapon gems, and the rest of the statue can be sold later."

Chu Yun took out the dry food from the package and distributed it to everyone, it is impossible to eat monkeys, it is impossible in this life.

Chu Yun and the others slept in the palace like this, until the next day Chu Yun and his party set off for Tamsui Lake, and the group of monkeys still did not wake up from the coma.

At this time, there was also a lot of tension in the naval base, and Chu Yun's group didn't know what was going on today, so they actually went directly to the entrance of the base, which was the Tamsui Lake.

At the bottom of this freshwater lake there is a passage to the underground world, which is well protected by bubbles due to the presence of plants similar to the coral of Fish-Man Island, which allows them to move underground all year round.

They will only appear on the island when handing over the Sea Tower Stone with the Navy.

"Chief Nord, are they just here to fetch water?"

"It's possible, but everyone is ready to fight." Although Nord informed the Navy Headquarters, it would take a lot of time to rush over from there, and it would be tonight at the earliest.

Due to its importance, the island is rarely discovered, but it is still guarded by a strong armed force.

Vice Admiral Nord's strength is actually not weak, but because he is relatively low-key, he is not very well-known in the navy.

Although this island is only in the paradise of the first half of the great voyage, the production of sea tower stone is much greater than that of the second half and other seas.

He has been stationed here for many years, and it is estimated that the Hailou Stone on the island will be mined for another two or three years, and then he will be able to leave this hellish place.

But if something happens at this last minute, it will be a big blow to his future, and then he will be transferred to a place where birds don't like he is now.

To tell the truth, he also thought about not being in the navy, and directly became a pirate, although his subordinates suffered with him, but they were very loyal.

But like the navy assigned here, most of the relatives live in their hometowns. In particular, the relatives of him, a lieutenant general, were even more protected. If he betrayed the navy and became a pirate, then his relatives would suffer.

Chu Yun and his party soon came to the freshwater lake, looking at the clear lake Chu Yun was a little worried.

"What's wrong, Captain?" Rhoda asked, puzzled.

"No one knows what the situation is like down here, Roda, you can't breathe underwater, so stay on the shore first."

"......" Rodda.

"It's the same with Fenrir, it's very inconvenient to use your sand when it encounters water, wait on the shore first, and I'll let you know if there's a situation." In the end, Chu Yun decided to only act with the Titans.

Fenrir and Rhoda are both Devil Fruit powers, and although this is fresh water, the devil knows what is going on below, and it is possible that it will suddenly turn into seawater.

This conjecture is not unfounded, and there are many islands on the planet with lakes that have this structure.

The inside of this freshwater lake should also be hidden, and the situation detected by Chu Yun's waveguide is normal, so he can only rely on them to go down and check slowly.