When these words were heard in Ye Zhi's ears, they became stunned, and they were worried about Gu Yu's safety.

That's right, if Gu Yu goes up and falls down at that time, it will be a baby on the tip of the senior brother's heart!

Ye Zhi touched his nose, "Innovative things won't succeed so easily...... You ask Gu Yu, he must not always succeed in making things the first time, right? ”

Gu Yu was suddenly clicked, stunned for a moment, and said honestly: "Actually, nine times out of ten, I have a successful ......"

"......" Ye Zhimo, forgot that this guy is a legendary genius holy weapon.

"Hmph, maybe you can't do it if you try for a lifetime, it's better to learn light skills!" The sting hit the two of them angrily.

"This hot air balloon has to be made." Ye Zhi thought about it, and said helplessly, a hot air balloon can't be made, let alone an airplane...... The Wind Seal Continent is so vast, if there is a hot air balloon, then she can go wherever she wants in the future, how happy!

"It's a big deal, don't let Gu Yu go up after you make it, I'll just go up myself!" Ye Zhi had also ridden in a hot air balloon in his previous life, and even wanted to take a hot air balloon driver's license on a whim, but he gave up because he was too busy delivering couriers and didn't have time to do so......

But anyway, during the time of obsession, I still learned a lot about hot air balloons.

"Let's see what's wrong first, and then let's talk about it." Yue Wanqiu said calmly, "Ye Zhi, when the time comes, I will accompany you up, if something happens, I will take you down with martial arts." ”

Seeing Yue Wanqiu say this, he was stunned for a moment, pursed his lips and didn't speak again.

He was annoyed in his heart, obviously he wanted to say that he took Ye Zhi up, but he was preempted by Yue Wanqiu, what kind of broken prince, in order to marry someone's sister, he was really stammering!

But what's the use of being unhappy, after fighting with Yue Wanqiu last time, he clearly knew that he couldn't compare to Yue Wanqiu's martial arts at all.

This person, who is the teacher from, has such deep internal strength and strong skills.

Ye Zhi nodded and glanced at Yue Wanqiu gratefully.

Big Guy Qiu must remember the agreement with himself at the beginning, what a sultry man......

Gu Yu also stepped forward, checked the half-burned hot air balloon, shook his head and said helplessly: "Sure enough, there are still many problems, but the main problem this time is that the fabric is not strong enough, and there is a force on it in the sky, and the force of the flame on it squeezes each other, so the fabric is stretched open......"

Gu Yu sighed, "In addition, this fabric is also very easy to catch fire, if you are unlucky, the flame will definitely crash......"

Ye Zhi also frowned after hearing this, she knew that modern hot air balloons are made of polyester ball fabric, in this era, where can she get some polyester?

"Maybe you can change it to a better fabric......," suggested Yue Wanqiu, "The fabric of Qinsang Country is notoriously good, why don't you take this opportunity to try all the fabrics you can use here, maybe you can solve these problems......"

"I may have one of these cloth ...... there."

Princess Yongnian listened to the conversation of several people and walked out of the room.

"What cloth?" Gu Yu asked, "If it is light and strong, and it is best to be fireproof and waterproof, then it is the most suitable!" ”

Ye Zhi smacked his lips, "So demanding?" ”

This is beyond modern standards, waterproof and fireproof, is there such a cloth?

Unexpectedly, Princess Yongnian nodded, "It's this kind of cloth, it's called Ayaluo ......"