Due to the tense situation in the Xuanyuan Continent today, an atmosphere of panic permeated the streets and alleys of Beiyuan City, and many monks chose to leave for fear of being affected by the impending war.

Han Zi didn't know anything about what was happening in the outside world, and at this moment, she and her small team were in the Design Pavilion in the Zhihai Space, seriously overcoming the difficulties.

Han Zi seriously explained the principle and steps of aero engines: "Aero engines mainly include piston, turbojet and ramjet engines. ”

The turbojet engine mainly includes five major components: intake duct, compressor, combustion chamber, turbine and tail nozzle, and the accessory system includes fuel, lubrication, starting, air, electrical, afterburner, thrust steering device and vector nozzle and other systems.

"As for the working principle of aero engines. ”

Han Zi then explained: "When the turbojet engine is working, the air is continuously inhaled, and the air in the engine is compressed, burned and expanded to produce high-temperature and high-pressure gas sprayed out of the tail nozzle, and the gas momentum increases, so that the engine produces reaction reasoning, the air intake channel introduces the working fluid, the compressor is pressurized, the combustion chamber is injected with oil for combustion and heating, and the turbine expansion work drives the compressor → tail nozzle to expand and accelerate→ and exhaust to the outside of the body at high speed. ”

First of all, I will explain to you the air intake, Han Zi continued: "The air inlet is mainly to inhale a sufficient amount of air in the air, and smoothly introduce the compressor with minimal flow loss, when the flight speed is greater than the air flow speed at the inlet of the compressor, the air pressure can be increased by stamping the compressed air." ”

Later, Han Zi explained to her small team the compressor, combustion chamber, turbine and tail nozzle.

After carefully explaining the working principle of the aero engine to everyone, Han Ziyou took out the engine drawings she designed and let the small team members watch, the team members were very curious about the strange-looking things on the drawings, and they didn't understand the so-called principle of the aero engine explained by Han Zi, and they didn't care too much, so they were listening to the story.

Han Zi put a lot of effort into the selection of raw materials for making engines, and finally Han Zi decided to use a kind of metal called Xuanbing Iron in the Immortal Cultivation Realm as the main raw material, and used it as a material for aero engines by fusing other metal raw materials.

Han Zi asked Xiao Huang to go to the Refining Pavilion in the space with the blueprints of the aero engine, preparing to let the demon beasts of the Refining Pavilion make an engine model first.

For the interior of the engine, there are more than 6,800 small parts, more than 1,600 lines and pipelines, and the difficulty of development is by no means an overnight success, so Han Zi has set a long-term goal.

Now the demon beasts in the space are very much what Han Zi has hoped for, as far as the refining pavilion is concerned, there are many demon beasts that have successfully advanced to the fifth-grade refiner, and a few of the demon beasts in the formation hall are also able to make a four-grade large array, Han Zi is very satisfied with this.

Just when Han Zi was carrying out the research project of aero engines in the space with a small team member, suddenly Han Zi's divine sense on the formation left outside Xiao Zi's residence gave back a trace of information to Han Zi, and after reading the content of the information, Han Zi was very puzzled in his eyes: "Uncle, what's the matter, something big must have happened that can make a great monk in the Yuan Infant Stage so flustered." ”

Han Zi explained to Xiao Meng and Xiao Huang, and then left the Zhihai space with Xu Fei and Xiao Lian.

Han Zi opened Xiao Ziju's formation, welcomed Zhao Yuanchun in, and asked Zhao Yuanchun with a sweet smile, "Uncle, why are you here?" ”

Zhao Yuanchun, who was originally in a bad mood, was in a much better mood when he saw his niece's sweet smile, only to see him gently scratch the bridge of Han Zi's nose, pretending to be a little angry and saying: "Okay, you purple girl, uncle, I have been shouting for a long time, and you have only opened the door for my uncle now." ”

After Zhao Yuanchun finished speaking, he deliberately pursed his lips.

Han Zi saw Zhao Yuanchun's pretending to be angry expression, and laughed in her heart, only to see her step forward and grab Zhao Yuanchun's left hand, and said in a coquettish tone: "Zi'er just came out, and when I came out, I happened to see my uncle calling me, I thought my uncle had just arrived, but I didn't expect my uncle to have been here for a long time, I'm really embarrassed, uncle." ”

"Hey, hey..."

After Han Zi finished speaking, he gently scratched his head with his hand, with an embarrassed smile on his face.

Seeing his niece coquettish towards him, Zhao Yuanchun completely fell.

"Haha..."

Zhao Yuan looked up to the sky and laughed, then gently touched Han Zi's pigtail with his hand, and said dotingly: "You ghostly girl, for the sake of you being so cute, my uncle doesn't care." ”

"Haha..."

After Zhao Yuanchun finished speaking, he and Han Zi laughed at the same time.

When Han Zi welcomed Zhao Yuanchun into the house, his uncle, who had always been more free and easy, had a very serious face at the moment.

Under Han Zi's inquiry, Zhao Yuanchun told Han Zi about the current situation in the Xuanyuan Continent.

I heard that Zhu Ran, the sect leader of the Heavenly Martial Sect, would once again launch a war against the other four domains, and it was the shame of the failure of Xue's first operation.

When Han Zi heard Zhu Ran and Tianwu Sect again from Zhao Yuanchun's mouth, his eyes instantly turned cold.

Seeing the cold color in Han Zi's eyes, Zhao Yuanchun knew, how could he not know that the demise of his sister and brother-in-law and the entire Han family was planned by this Zhu Ran, and he didn't want to avenge his sister and brother-in-law, once he was ready to go to Zhu Ran for revenge, but he was stopped by his master halfway, he looked at his master who had not lived much, and he couldn't bear it, so he had to follow his master back to Taiyuan Sect.

Zhao Yuanchun stung Han Zi when he left, and he told Han Zi that for revenge, when she didn't have the capital to confront Zhu Ran, she should be patient for the time being, if she really decided to do that, he would fight for his life and protect Han Zi's safety.

Looking at her uncle's meaningful expression, and her uncle's willingness to protect her safety with his own life, Han Zi nodded heavily to Zhao Yuanchun with tears in his eyes.

After Zhao Yuanchun left, Han Zi's eyes exuded a strong killing intent, and a cold word came out of his mouth: "Zhu Ran, Tianwu Sect, I must make you regret killing my father and mother." ”

At this time, the Xuanyuan Continent was filled with a low aura, and not long ago, Yu Zhengtian, the leader of the Scattered Cultivation Alliance, rejected the request of Yang Feihu, the leader of the Immortal Cultivation Alliance, to jointly fight against the Heavenly Martial Sect.

As soon as the news came out, the Xuanyuan Continent was in an uproar, because the Scattered Cultivation Alliance's refusal to help, put the Immortal Cultivation Alliance, which already had no advantage over the Tianwu Sect, at an absolute disadvantage.

Fortunately, the Heavenly Martial Sect's Supreme Ancestor Zhangwu Zhenzun and the Huayang Sect's Jade Lotus True Venerable reached an agreement, and the two Great Transformation Divine Cultivators would not participate in this conflict.

In the Tianwu Sect residence of the Great Qi Mountain Range, Zhu Ran looked at the several corpses in front of him, and after his ruthless eyes scanned the elders of the Tianwu Sect for a circle, he saw his cold voice sound: "Whoever has an opposing opinion will end up like them." ”

"I wish to listen to the sect master!"

The elders of the Tianwu Sect looked at the few elders who were killed by Zhu Ran, although they were not convinced, but there was no hope of turning the tables around, since this was the case, then they had to take advantage of the situation.

Zhu Ran watched the reaction of the elders, and sneered on his face.

"Next, I announce that the march into the Four Regions will be officially launched, and those who do not obey will be killed on the spot, and those who follow me will prosper and those who oppose me will die!"