One Piece Hell Brook.

Kozaburo Shigezuki didn't expect that Gangnir Kobelco was so difficult to melt. He even went underground to use the magma from Fujiyama Volcano to start a fire. He couldn't melt the Kobelco for two days, which made him very anxious!

In the end, things took a turn for the better with the arrival of Brooke and the others. Brooke asked Redfield to use Thunder Metallurgy to slowly help Kozaburo Shigezuki melt Gangnir Kobelco through the principle of an electric furnace!

The instantaneous temperature released by lightning is higher than that of magma, reaching [-] to [-] degrees Celsius. Ordinary electric welding can reach [-] to [-] degrees Celsius.

The normal temperature of magma is only 900 to 1400 degrees Celsius. The temperature range of the flame is a bit wide, ranging from 200 degrees Celsius for paper burning to the highest temperature of more than 3000 degrees Celsius.

Depending on the color of the flame, the temperature will vary greatly!

Dark red is about 600 degrees Celsius, dark red is about 700 degrees Celsius, orange-red is about 1000 degrees Celsius, pure orange is about 1100 degrees Celsius, and golden orange is about 1200 degrees Celsius.

Golden yellow is around 1300 degrees Celsius, golden white is around 1400 degrees Celsius, pure white is around 1500 degrees Celsius, and white-blue is above 1500 degrees Celsius.

Obviously, during the battle at the top, Fire Fist Ace's orange flames could not defeat General Akainu who had awakened the Rock Berry Fruit.

If Fire Fist Ace can develop a blonde form, a white-haired form, a blue-haired form, and various temperature forms like Kakarot next door, and become a real Entei, he will probably be able to smash Akainu Sakaski.

Even Straw Hat Luffy in the form of Sun God Nika has a white flame hair form, and is not afraid of Blue Dragon Kaido's high-temperature flame torch, the Fire Dragon Emperor!

Under Brook's guidance, a simple lightning furnace was built. Even Shigetsuki Kozaburo, a master swordsmith, knew for the first time that lightning can also melt steel. This was also the first time he came into contact with this new knowledge and technology. !

With the full help of everyone in the Hell Pirates, Kozaburo Shigetsuki was able to successfully forge Gangnir Kobelco!

Red Earl Redfield's high-voltage lightning melts, the golden lion Shiki helps carry and turn over with fluttering fruits, Whitebeard Newgate helps hammer iron, and Charlotte Lingling's sun Prometheus helps maintain the forging temperature!

Shigetsuki Kozaburo became the technical director, and at critical moments he would work with Whitebeard Newgate to hammer out a sword embryo that was made of a variety of rare metals.

After several weeks, a Ten Thousand Forged Sword was finally released. It was a naginata blade with a cold light. The mirror-like blade was so cold that it clearly reflected the appearance of the white-bearded Newgate!

Before putting on the long handle of the weapon made from the Ares Tree, Newgate couldn't wait to pick up the naginata blade and try it out, as if he were picking up a butcher's knife.

At this moment, Newgate felt the domineering energy rushing towards the naginata crazily. The blade of the blade automatically turned pitch black, and Newgate's thick arm like a water tank was sucked into bones.

Whitebeard Newgate roared, and a terrifying thousand-meter sword roared out, splitting a mountain in the distance into two. Seeing Shigetsuki Kozaburo's eyes widened, is this a divine weapon?

The two-year-old Koshiro in the back hall was also frightened by the huge sound of the mountain collapsing and started crying. The entire Isshin Forging Hall was in chaos!

"This is definitely the ultimate level of sharp knife, we succeeded!!!"

Shigetsuki Kozaburo cried loudly, releasing his excitement. Although this sword was not made by him independently, it was the forging led by him, and it can be regarded as his achievement!

"Haha~, Newgate, I'm a little envious of you, this is a supremely sharp knife!!!"

Golden Lion Shiji is also a little excited. In recent days, he has turned over the sword embryo, and Newgate has hammered it. The perfect cooperation is why he can forge it ten thousand times so quickly and become a ten thousand forged sword. Every pattern on this naginata has His contribution!

"return!"

Whitebeard Newgate cursed again, snatching back the haki absorbed by the naginata, and his arms returned to their original shape, but the excitement in his heart was already visible on his face!

"Calm down, Newgate, and put the handle on the knife. This is the best and hardest part of this batch of treasure wood Adam, and it is specially reserved for you!"

Brooke asked Newgate to hand the naginata to Kozaburo Shigetsuki and assemble the naginata completely.

"Well, Newgate, can you choose a name for this supreme sword? Do you choose it, Kozaburo, or let Brother Brooke choose it?"

Charlotte Lingling's words immediately moved both Newgate and Kozaburo. After all, this is one of the few supreme sharp swords in the world, and its naming is also a high honor!

"Gula la, this sword will be mine from now on. Let Kozaburo name it. Let Kozaburo's name become famous all over the world along with my naginata!"

Whitebeard Newgate said with a smile that this naginata will definitely accompany him throughout his life in the future. The two are bound together. There is no shortage of fame for naming, and Kozaburo needs the fame for proving his technique even more!

In the end, after Kozaburo Shigezuki installed the handle of the naginata, he did not refuse. He asked Brooke again, and finally decided on the name Cong Yunqi!

The Supreme Great Knife, Kuzukiri and Naginata, were forged in Guibashi Town, Suzugo, Wano Country. It was presided over by Kozaburo Shigezuki of the Isshin Forge, and completed together with the crew of the Hell Pirates!

"Wuhu~, have a banquet to celebrate!"

Brooke shouted, and the entire Isshin Forge fell into joy.

Even Suzuki Daimyo, Shigetsuki Toramaru, came to congratulate me. Kozuki Oden also arrived at Suzuki a few days ago and finally joined the Hell Pirates team again. Now he and Kaido fight each other every day, and Brooke doesn't care about them!

In the days that followed, Redfield's Noble Sword, Golden Lion Shiji's Ying Ju and Kumu, and Lingling's Emperor Blade were melted and reforged one after another, and added to Gungnir Kobelco, all becoming famous swords at the level of a fast sword. It is still an outstanding and top-notch sharp knife!

Due to material issues, they still haven't become the ultimate sharp sword, but a few people are very satisfied and determined to use their domineering power to upgrade their weapons to become the supreme sharp sword!

And Gangnir Kobelco has also been used up. As for Brook's Seven Star Sword, he has now cultivated it into a monster and the supreme sharp sword. If he wants to upgrade, he still needs to continue to plan for the one in the hands of King Odin. Gangnir Kobelco!

The Hell Pirates were happily upgrading their weapons in Wano, but the navy like Admiral Hoth was having a hard time in Elbaf. This guy Brook really just slipped away without giving him any chance to meet!

After staying for more than a week, these marines were forced to return to the New World G1 branch. However, Jinfo Sengoku, known as the wise general, suggested outflanking the Rocks Pirates and looking for an opportunity to severely damage Rocks!

This suggestion was accepted by General Hoth, and the three generals joined forces to fight even Rocks!

These senior generals put on soldier clothes and drove a common warship to support Ganggu Kong, while the large force returned to the G1 branch in a swaggering manner!

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