The invisible sonic barrier in the air was like an extremely elastic membrane in front of Zhang Tie.
This membrane was not terrifying. Zhang Tie felt that he could easily penetrate through it and break it. However, for some reason, Zhang Tie still couldn't break through this sonic barrier even though he had tried many times.
Translator: WQL Editor: Aleem The chakra of King Roc Sutra was still running steadily and providing constant strength for Zhang Tie. Zhang Tie felt that this speed was still not his limit. He had not made full use of the ability granted by King Roc Sutra. However, what made Zhang Tie so depressed was that although he felt that he could easily break through the sound barrier, actually, his speed was always around 1,200 miles per hour no matter how hard he tried. Such a speed might be terrifying for common knights; however, Zhang Tie was not satisfied with it.
This feeling was like driving a Faerie Dragon T9, but could only drive slowly on the highway at a speed of 40 km/h. The engine of Faerie-Dragon T9 and all the performances of this car could definitely support you to run above 200 km/h. You're also a racer; however, no matter how hard you step on the accelerator, you could only run at the speed of 40 km/h.
What's the problem?
If this happened to a sports car, it might be because you didn't adjust the gearbox to a higher gear.
However, as for Zhang Tie who cultivated King Roc Sutra, he couldn't release the great flight ability granted by King Roc Sutra. Although he felt that he could easily break through the sonic barrier, he still stagnated in front of the sonic barrier. If so, there was only one problem — — there must be a corresponding flight secret method in the complete King Roc Sutra which could release the great flight ability and talent of King Roc Sutra. The King Roc Sutra that Zhang Tie had grasped was incomplete. Without the corresponding flight secret method, Zhang Tie felt that he could not release the great flight ability.
Zhang Tie remembered that it should be the mesosphere above the stratosphere.
When Zhang Tie tried to break through the sonic barrier, he sensed two obvious features of the mesosphere. Firstly, it was cold. The higher the mesosphere was, the colder it would be. In the middle of the mesosphere, the temperature might be below -50 degrees Celsius. The so-called bone-piercing strong wind should be in this situation. Secondly, it was obvious convective movement of airflow.
The temperature below the mesosphere was higher than that above the mesosphere. This situation was similar to that in the troposphere. Therefore, the convective movement of airflow in the mesosphere was also stronger than that in the troposphere.
Zhang Tie didn't care about the low temperature at all. His protective battle qi and cold-resistant ability were both excellent. As for Zhang Tie, the super powerful airflow movement in the mesosphere was absolutely like the undercurrent at the bottom of the ocean, which could help him reach a greater speed with a smaller strength.
Previously, he sensed the airflow movement based on his sharp instinct; now, with lotus-flower eyes, as the airflow movement in the mesosphere was caused by the temperature difference, Zhang Tie could even see the direction of the airflow movement in the mesosphere.
With lotus-flower eyes, Zhang Tie saw the cyclones and air columns in the mesosphere like super huge color-changing mushrooms in the mesosphere. These color-changing mushrooms varied from dozens of miles in length to thousands of miles in length. What a splendid sight!
Zhang Tie had tried many times. With the help of airflow, he could indeed fly more effortlessly. Sometimes, he could also be more flexible. However, no matter how strong the airflow was, no matter how well he used it, he still couldn't break through the sound barrier.
When he reached an altitude of over 400 miles above the top of the mesosphere, Zhang Tie saw a faint arc on the horizon in the distance for the first time. At the sight of this arc, Zhang Tie also felt a stress, which was very similar to that of the sonic barrier. Obviously, he felt that he could fly higher; however, there seemed to be a transparent ceiling above his head, which prevented him from continuing to fly higher.
Zhang Tie knew that if he couldn't master the accompanying flight skill of King Roc Sutra, he could only reach the maximum speed and height of about 1,200 miles per hour and the top of the mesosphere over 400 miles above the ground.
After flying in the mesosphere for 8 hours, Zhang Tie had long flown out of the territory of Zhongzhou Province and Longxi Prefecture.
After flying over 9,000 miles, Zhang Tie didn't feel tired; instead, he felt a bit depressed. He sensed that the thunder hawk was flying towards him at a speed above Mach 2 and almost reaching 3,000 miles per hour. However, he didn't feel tired either. As an earth knight who cultivates King Roc Sutra, how could he not match a bird in flight ability?
However, Zhang Tie knew that he couldn't be anxious about it. Unless he could gain the complete version of King Roc Sutra, he could only think about how to improve his flight ability gradually. However, if there really was a complete version of King Roc Sutra, as long as such an emperor-level secret method appeared, it would arouse a great shock among humans and demons. Numerous powerhouses would scramble for it. Even heavenly knights and sage-level knights might take action. As an earth knight, I'm afraid that I'm not qualified to participate in such a competition at all. '
During the past few hours, Zhang Tie met three batches of knights and two airboats in the sky.
The two airboats didn't find Zhang Tie at all. As for the remaining two batches of knights, the first one was composed of 2 earth knights and 1 black iron knight. They were also flying in the stratosphere. After discovering Zhang Tie, they didn't communicate with each other. The second one was composed of two earth knights. At the sight of Zhang Tie, the two earth knights seemed to be very curious about Zhang Tie's flight in the mesosphere for some reason. They chased after Zhang Tie in the stratosphere for a short while as if they wanted to take a look at Zhang Tie's look. However, Zhang Tie was not interested in communicating with them. Therefore, he directly flew away.
The two batches of knights didn't exceed 900 miles per hour in the sky.
What really shocked Zhang Tie was the third wave of knights. Actually, there was only one shadow knight in the third wave, a shadow knight who was flying in the intermediate layer in the form of the virtual image of a nine-headed boa … (To be continued).
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