After leaving the fairy pool of Yaochi, Zhou Tong directly followed a fairy from Yaochi to the military refining room of Yaochi.

The military refining room is very simple, with only a cushion and a strange large tripod.

"This is the highest-quality military refining room among our Yaochi!" said the fairy of Yaochi. "In the past, only the Queen Mother and the Supreme Elder could use it. In the past, our Yaochi ancestors brought back a true sun fire from the Sun Star and have been cultivating it here."

"I understand, you go back!" Zhou Tong nodded.

After the fairy who was in charge of Yaochi's leadership retreated, Zhou Tong took a deep breath and directly uncovered the cover of the big tripod in front of him, and suddenly-

"boom!"

An extremely terrifying burning heat emerged instantly. Zhou Tong felt as if he had jumped into a furnace, and the temperature in the entire military refining room began to rise at a terrible speed.

Immediately afterwards, a scorching flame rose from the cauldron.

"It's indeed the true fire of the sun... The holy land like Yaochi has good resources. Even such a holy fire can be cultivated. The younger disciples don't need to go to dangerous places like the Fire Domain for training soldiers!" Zhou Tong sighed.

But soon, Zhou Tong calmed down.

At the same time, something appeared in his hand, which was a painted black sword about an inch.

The style of the small sword is a bit like the Xuanxiao sword Xihe sword in the fairy sword, but it is a little thinner and thinner than the Xihe sword, without a sword grid, and the whole body is streamlined. At first glance, it looks like a pitch-black shrinkage Xihe sword.

This is the dragon-patterned black-gold Holy Spirit Sword that Zhou Tong made from the hands of the Nine-Oblook Stone Man.

It is no wonder that Ye Fan of the original work often used it as a stick to "smash" it.

"It's a pity that the dragon patterned black gold holy spirit sword had it been born with the holy spirit. If it had been bred with it, I'm afraid this sword wouldn't have been so small!"

The Holy Spirit is actually a fairy gold mine to some extent.

Because even if it is just the initial grain of sand-like immortal gold, once it is conceived with the Holy Spirit, it becomes a companion weapon for the Holy Spirit; then during the process of the Holy Spirit's birth, this grain of sand-like immortal gold will grow with the growth of the Holy Spirit, and eventually grow from a grain of sand to the size of a real weapon.

Zhou Tong shook his head, then gently whipped it, and suddenly—

"Sharp!"

The dragon-patterned black gold sword vibrated, and the black lightning was lit up like a horse, interwoven with a terrifying black lightning, which was invincible to destroy the world.

"Is this the way contained by the Holy Spirit that I have cut off?" Zhou Tong opened the martial arts heavenly eyes and looked carefully at the lightning-like sword light. This way, like thunder and sword, was a bit mysterious.

But unfortunately, he was interrupted by Zhou Tong in the early stages of his pregnancy.

"But... since it's gone, then dissipate!" Zhou Tong triggered the true sun fire in the military refining room, and a black moon flashed through his eyebrows.

The two forces of one yin and one yang began to act on the dragon-patterned black gold sword, slowly grinding away the "Tao" and "Ru" imprinted on it bit by bit.

Fortunately, the road patterns on the dragon-patterned black gold sword were only initially imprinted, and were only equivalent to the level of the Dragon Transformation Secret Realm, so Zhou Tong only spent half an hour to completely wash off the patterns on the sword.

If there are more "Tao" and "Rule" on the sword and reach the level of the secret realm of the Immortal Platform, it may take Zhou Tong several days to erase it like this.

After the dissipation of "Tao" and "Li", the dragon-patterned black gold sword turned into a sword embryo again. Although it was just an extremely small sword embryo, it was also considered a sword embryo.

"Oh, in this world, the more trump cards, the better. The more exposed your background, the more you die miserably." Zhou Tong looked at the sword fetus and sighed slightly in his heart. He couldn't help but think of the original future generations.

Although the specific reason is unknown, in Zhou Tong's opinion, one of the reasons why Emperor Wushi was lying on his body was because there was no Ye Fanhei, and the trump card was not hidden very well...

"The Vajra Carving has replaced the role of the Ziyang Lamp. I also need a tool to conceal the existence of Ba Zhong, and a tool to install the tool to prove the truth..."

"It just happened to use you to experiment with what it looks like after the integration of the True Dragon Technique and the Grass-Crassic Sword Technique!"

"Last time I saw the mystery of the immortal fire activate the red gold of the Phoenix Blood last time, I already understood how to activate the mystery of the immortal gold. It's just right to try it!" Zhou Tong looked at the sword embryo and silently activated the True Dragon Method, and suddenly-

"hold head high!!"

A dragon roar sounded, and suddenly, the dragon pattern on the dragon pattern black gold seemed to come alive.

The dragon pattern turns into real dragons, cruising on the immortal gold, like a dragon swimming in the sea.

"An! An! An!..."

The dragon roared continuously, and the dragon patterned black gold instantly turned into a dragon's nest, and countless real dragons were shuttled through the heart.

The black and extremely hard dragon pattern black gold seemed to turn into water at this moment.

The dragon patterns turned into real dragons, constantly swimming in the dragon pattern black gold; what's even more amazing is that when the dragon pattern was swimming, there were ripples around it, as if it was really paddling!

"The mystery of the True Dragon Nine Changes is indeed contained in the dragon pattern black gold..." Zhou Tong narrowed his eyes slightly, and he saw the mystery of the True Dragon Nine Changes.

That ripples-like thing is the ultimate embodiment of the mystery of the Nine Changes of the True Dragon.

This ripples make the dragon pattern black gold become invincible for a moment.

This is the ultimate mystery of dragon pattern black gold.

The constantly swimming true dragon is the law and mystery of dragon pattern black gold. Dragon pattern black gold is as its name suggests. It has the characteristics of a true dragon and can use the supreme mystery of the Nine Changes of the True Dragon, and will not invade all laws.

Each type of immortal gold has its own supreme origin and mystery, but not many people have developed it since ancient times. The mystery of immortal gold is extremely difficult to develop. Even the great emperor who has proved the truth, few people can develop it.

Including the Phoenix Blood Red Gold, Zhou Tong has now mastered the origin and mystery of the two immortal golds.

However, these two kinds of origin and secrets of immortal gold are mastered by taking shortcuts by relying on the Ten Evil Treasures.

The other types of immortal gold are difficult.

Now, after activating the mystery of immortal gold, this dragon-patterned black gold sword exudes a mysterious aura.

This feeling is like Zhou Tong gave it a brand new life, spiritual and divine.

"Living!?" Zhou Tong was also a little shocked. It was not the first time he activated the mystery of the Immortal Gold. He had activated the mystery of the Phoenix Blood Red Gold before, but he could not feel this feeling.

But at this moment, after the mystery of the dragon-patterned black gold sword was activated, Zhou Tong suddenly felt that the sword had been "living", just like the kind of holy soldiers who gave birth to gods. It was no longer a dead object, but a living object.
Chapter completed!