Han Qiu's speed was faster than Zhang Ruochen, and he quickly caught up to Zhang Ruochen.

Zhang Ruochen said: "Even if we join forces, we will definitely not be the opponent of Huo Jingcheng. When I was fighting with Princess Zhenling, I was already injured, and maybe I was injured even worse than you."

"What should I do?"

"Escape! If it really doesn't work, I can only fight him."

Zhang Ruochen and Han Qiu were already extremely fast, but Huo Jingcheng was faster and he was getting closer and closer.

"Wow! Wow!"

Huo Jingcheng flew in the hurricane, waved his arm and slashed out two more wind blades.

With their current state, it is impossible for them to block the power of the Wind Blade.

Zhang Ruochen and Han Qiu rushed out to the left almost at the same time, rolling on the ground, and avoiding them at all.

After they escaped from the woods, thick white mist suddenly appeared in the air, and the ground was full of ruins, broken city walls, dilapidated streets, and some bones of humans and beasts.

"What's going on? Where is this place?" Zhang Ruochen said.

Han Qiu was happy and said, "I know! This is a primary ruin called Baiwu Ancient City, which is said to be the place where Baiwu Bansaint once lived. However, a long time has passed and it has been completely abandoned. My disciples from Yuntai Sect Mansion have come here to experience it. They actually escaped to Baiwu Ancient City, and I am now saved!"

"The primary ruins may still have a certain threat to warriors in the Xuanji realm and the Earth Realm, but they are not dangerous for warriors in the Tianji realm. Do you think a primary ruin can block Huo Jingcheng?" Zhang Ruochen said.

Han Qiu said: "I remember there is an underground palace in Baiwu Ancient City, which may be able to block him. Zhang Ruochen, come with me."

Huo Jingcheng chased behind the two of them, constantly punching out wind blades, shattering the broken buildings in Baiwu Ancient City into pieces.

"Get up!" Huo Jingcheng roared.

The powerful wind power lifted a wide street and huge rocks smashed towards Zhang Ruochen and Han Qiu.

Zhang Ruochen used the shadow of the flying dragon in the wind, as if he turned into a phantom of the flying dragon. He walked between the huge rocks and easily avoided it.

"puff!"

However, Han Qiu was not as clever as Zhang Ruochen's body movements. He was spit out of his back and mouth by two huge rocks, and his delicate body was thrown forward.

Zhang Ruochen moved horizontally, caught Han Qiu, held her in his arms, rolled around, and rushed straight into the gate of the underground palace.

Huo Jingcheng followed closely behind and wanted to rush in.

"Boom!"

The stone gate of the underground palace fell from above, blocking Huo Jingcheng outside.

The stone gate is more than fifty meters high and is made of hard diamond iron sandstone. Even a warrior from the Tianji realm will not be easy to blow the stone gate open.

"Bang bang!"

Zhang Ruochen hugged Han Qiu and rolled and fell down from the stone stairs. He fell to the bottom of the underground palace.

Originally, Zhang Ruochen was covered in bruises. After falling like this, his whole body seemed to be disintegrated. He lay on the ground, panting without moving.

It was so thrilling that it was only a little short of it, and Huo Jingcheng caught up with it.

Han Qiu was held in Zhang Ruochen's arms and pressed against Zhang Ruochen, and she didn't move. Previously, she was hit on the back by two huge rocks and suffered severe internal injuries and almost fainted.

She lay in Zhang Ruochen's arms, hugged Zhang Ruochen's neck with both hands, and whispered: "Thank you... Thank you..."

At this moment, the two were in close contact, which was very charming.

Zhang Ruochen felt two soft soft peaks pressing on his body, and a faint fragrance was smelled at the tip of his nose. He immediately woke up. His five fingers touched Han Qiu's back and gently pushed Han Qiu's body. He pushed Han Qiu aside.

Zhang Ruochen sat up with difficulty, took out a light-attributed spiritual crystal, and injected the true energy into the spiritual crystal.

The spirit crystal emits bright light, illuminating the underground palace.

The underground palace is very vast, with a height of about 120 meters, a length of 200 meters, and a width of about 80 meters. It is a very empty space, like an underground martial arts training ground.

On the stone walls of the palace, there are many ancient patterns carved, which seem to be some kind of array pattern.

Han Qiu had already sat up, his face pale, stared at Zhang Ruochen and said, "Thank you for helping me just now."

Zhang Ruochen stared at her curiously and said, "Didn't you thank you?"

"Is that true?" Han Qiu's face was a little hot, for fear that Zhang Ruochen would hold on to what had happened just now, so he added, "I can't remember what happened just now!"

"I can't remember, forget it! Huo Jingcheng can be recovered quickly! This underground palace has been abandoned for too long, and the defensive formation has long lost its function. A stone gate alone cannot stop Huo Jingcheng for long."

As soon as Zhang Ruochen finished speaking, a loud bang came from the direction of the stone gate, shaking the entire underground palace slightly, and dust fell down.

"boom!"

"boom!"

...

Huo Jingcheng began to attack the stone gate. Every time a wind blade was cut out, a deep mark would be left on the stone gate.

Almost every second, the stone door would be shaken to the point of being beaten.

Zhang Ruochen and Han Qiu did not dare to delay, so they immediately took the healing pills, sat cross-legged on the ground, and began to heal the wounds.

An hour later, Zhang Ruochen opened his eyes, stood up, and heard the loud noise from outside, with deep sadness in his eyes.

After an hour of recuperation, Zhang Ruochen's injuries have probably recovered by 10% but it will take at least two days to recover.

With the defensive power of the underground stone gate, not to mention two days, even two hours may not be able to stop it.

Zhang Ruochen stared at the formation patterns on the stone wall of the underground palace, pondered for a moment, and walked over.

Han Qiu also opened his eyes, saw Zhang Ruochen's actions, and asked, "What are you going to do?"

"In our current state, once the stone gate is broken, we will undoubtedly die and have no chance to escape."

Zhang Ruochen dragged his chin, stared at the patterns on the stone wall, gently stroked the stone wall with his fingers, and said, "If the formation inscriptions of the underground palace can be repaired and the defensive formation can be opened, then even if Huo Jingcheng's cultivation is ten times stronger, he probably won't be able to break in."

Han Qiu shook his head and said, "It's useless. The formation here was burned by Bai Wu Half Saint himself. It's very profound. A formation master from Yuntai Sect Mansion has been studying here for three months, but he has not been able to study the formation."

Zhang Ruochen said: "Although I am not a master of formations, I have read many advanced formation books and have some research on formations. Maybe I can repair some of the formation inscriptions here."

Han Qiu gave Zhang Ruochen a blank look and said, "I don't know where you are confident. Even the formation masters cannot study it. Do you think you can study it thoroughly in just one hour?"

"The formation masters of your Yuntai Sect Mansion are at most four-grade formation masters. Do you think he has read the fifth-grade formation books? The sixth-grade formation books?"

"Have you seen it?" Han Qiu said.

Zhang Ruochen curled his mouth slightly and said, "If I'm not wrong, the formation inscription on the stone wall of the underground palace is a sixth-grade formation."

Formation masters can be said to be a very noble profession in Kunlun Realm.

If a city or a sect is protected by a formation, it will easily be attacked by wild beasts, slaughtered, and destroyed.

Therefore, every city will arrange a city-mopping formation, and at least a third-grade formation master is needed to arrange the city-mopping formation.

For example, the city-shadow formation of the royal city of Yunwu County must be supervised by the fourth-grade formation formation to be successfully deployed. The power it explodes is enough to crush the martial arts myth of the Tianji Realm.

In the 36 counties and countries of Tianmo Ridge, the fourth-grade formation master is already at the peak.

As for the sixth-grade formation that Zhang Ruochen mentioned just now, that was something Han Qiu didn't dare to think about.

The sixth-grade formation books, let alone Yuntai Sect Mansion, even the inner palace of the Wushi Academy in Tianmo Martial Arts City cannot be found.

Han Qiu stared at Zhang Ruochen with some shock and said, "The formation master from Yuntai Sect Mansion also said the formation inscriptions of this sixth-grade formation. Are you really proficient in formation inscriptions?"

"I'm not proficient, I've just read a lot of sixth-grade formation books." Zhang Ruochen said solemnly.

The complexity of the sixth-grade formation is not something that ordinary warriors can imagine. If you want to explain a formation clearly, a sixth-grade formation master must write at least one book and so much information.

It can be said that a formation is a book.

If a book about the sixth-grade formation is circulated, it will definitely be snatched by the formation masters. As long as they can comprehend something from it, it will be enough to improve their attainment in formation to a higher level.

However, after hearing what Zhang Ruochen meant, he seemed to have read many books on the sixth-grade formation, so Han Qiu felt that it was quite incredible.

If Han Qiu knew that Zhang Ruochen had read many seventh-grade formation books and eighth-grade formation books, I wonder what she would think?

Han Qiu asked, "How sure are you able to arrange a sixth-grade formation?"

"Design a sixth-grade formation?"

Zhang Ruochen shook his head and said, "With my current understanding of the formation, it is impossible to arrange a sixth-grade formation. However, if you only repair this sixth-grade formation, there is still a certain possibility. Moreover, it does not require complete repair at all, even if it is only one-tenth of the repair, it is enough to block Huo Jingcheng.

Zhang Ruochen took out an inscription pen and began to repair it according to his own understanding.

The inscriptions of the sixth-grade formation are quite complex, mysterious and exquisite, and they are quite testing the formation master's mental power. Even if it is just a small mistake, it will cause the formation to fail to operate.

The sixth-grade formation master is an existence that Zhang Ruochen also needs to look up to.

Their mental power has reached the forty level.

They can use their mental power to communicate with birds and animals; they can use their mental power to transmit voice to people thousands of miles away.

Repairing the sixth-grade formation is a big challenge for Zhang Ruochen.
Chapter completed!