While Zhang Quan was sighing, there was a tearing sound in the sky. Zhang Quan had heard this sound more than once, but he felt extremely excited every time he heard it.
This is the power of industry. A plane that breaks the speed of sound already has the ability to abuse a Jindan-stage warrior. Of course, it must be equipped with the right weapons.
The planes flew away quickly. Although the swept-wing plane lost its wing just after taking off, the remaining two planes seemed to be very successful. With the help of the formation, they broke through all the way and disappeared in the distance like lightning.
Between heaven and earth, the only sound echoed was the crazy sound of the plane breaking through.
The sound was very loud, but neither Zhang Quan, Ning Xiaolan, nor the people around them were disgusted. Instead, they all raised their heads and watched with excitement and anticipation.
The forward-swept-wing aircraft with broken wings had been towed away, but the pilot had no problem as the aircraft had just taken off and had not yet reached its maximum speed. Moreover, the aircraft did not land immediately but circled a few times to allow the pilot to prepare.
Zhang Quan showed concern for the pilot, gave him some encouragement, and then continued to look up at the sky. There were only black dots and the plane's contrail in the sky, and the sound was gradually fading away.
About a moment later, a black spot appeared again in the distance, and the plane was approaching rapidly; however, no sound could be heard, which was very strange.
Seeing this situation, Zhang Quan smiled and observed side by side with Ning Xiaolan.
About a dozen breaths later, the plane suddenly flew over the sky, and it was a while before the roar was heard again.
"It seems like it was successful?" Ning Xiaolan asked, looking at the sky.
Zhang Quan asked the person who was testing the speed: "How is it?"
"The speed we just measured is 618 meters per second, which is approximately 1.82 times the speed of sound." The tester reported loudly and affirmatively.
Zhang Quan clenched his palms, thought for a while and immediately said to his left and right: "Tell the pilot to fly to a high altitude and dive down to see if the speed can be improved!"
"Ah..." As soon as Zhang Quan gave the order, the disciple Lu Shichao beside him exclaimed, "Teacher, we can't do this, it's... too dangerous. After all, we are testing the aircraft. If it loses control and crashes into the ground... it will affect everyone's confidence."
Zhang Quan was stunned for a moment, then regained his composure. He was too impatient. Yes, if the plane lost control, it would definitely kill people if it crashed into the ground. This matter cannot be rushed.
"Go to the sea!" Ning Xiaolan's calm, almost cold voice interrupted Zhang Quan's astonishment. Everyone around was also looking at Ning Xiaolan, a little stunned - this former Princess Qingcheng didn't seem to be a kind-hearted person.
Yes, Ning Xiaolan is certainly not a weak woman who dares to plot to make her husband a "saint".
"Go to the sea!" Ning Xiaolan said again when she saw everyone was stunned.
Zhang Quan exhaled slowly, and said to the person next to him again: "Tell the pilots to fly to the sea and dive over the ocean. Tell them that if the speed exceeds twice the speed of sound, each person will be rewarded with one ton of liquid spiritual energy. If it exceeds 2.5 times the speed of sound, the reward will be two tons. If it can exceed three times the speed of sound, the reward will be four tons!"
Ningguo's liquid spiritual energy still has impurities, but if it is converted using the spirit gathering array, it is still quite good spiritual energy. Even four tons of liquid spiritual energy with impurities is enough to push a foundation-building stage cultivator to the Nascent Soul stage.