After Zhang Nan replaced a hot air balloon with the same model as Li Er from the system, he began to drum it up, and it didn't take long for the air bag on the hot air balloon to bulge, and the gas tank that was spewing fire also made this sound.

"Okay, the Emperor, please come up, this is a hot air balloon, when he caught Jieli, the minister flew over his camp with it and threw a thunderbolt on it." Zhang Nan said with a smile, as if he recalled the first unequal war with the outside world in Datang.

When Li Yuan heard that it was already well, he immediately became a little impatient, and as soon as he stepped into the basket of the hot air balloon, he stood in the basket and said: "Okay, okay, I know that you have a merit in catching the profits, hurry up and take me to the sky, I will also experience the feeling of flying today." Li Yuan was obviously not interested in Zhang Nan's own "great achievements", after all, it was not Li Yuan who flew over the Turkic camp in a hot air balloon.

Zhang Nan was bored with himself, so he didn't say much, but said to the two feng shui masters who were amazed by the gas tank: "The two Taoist masters should also come up, with this thing, I believe it will be much easier for you to see the trend of the mountain range." ”

After hearing this, Yuan Tiangang and Li Chunfeng also stepped into the hot air balloon, but their eyes were still on the gas tank of the hot air balloon, after all, nothing that could be burned could be ignited, which made the two people who already had preliminary knowledge of chemistry feel very curious.

"Qingquan, what's in this? Is it oxygen? Yuan Tiangang asked first.

"In my opinion, it must be hydrogen." Li Chunfeng was also not to be outdone, revealing his knowledge of chemistry.

"Well, I don't know, but it's nothing more than combustible gas like methane, and I don't know exactly what it is." Zhang Nan said truthfully, Zhang Nan really didn't know what kind of gas was in this, anyway, it could be burned.

Li Yuan was obviously a little impatient waiting, and patted the hot air balloon basket and said, "I said, Qingquan, are you flying this thing, why haven't you moved for a long time." ”

Zhang Nan heard Li Yuan's urging, so he opened the valve of the gas tank, allowing more gas to escape, and slowly, the hot air balloon slowly left the ground.

"Eh, hey, I'm flying." Li Yuan looked very excited, like a child, Zhang Nan estimated that if it weren't for the fact that the basket of the hot air balloon was too small, Li Yuan would be eager to dance in the air now.

Although Li Chunfeng and Yuan Tiangang also flew into the sky for the first time, they were obviously much calmer than Li Yuan, after all, they were here to do business.

Yuan Tiangang looked at the mountains in the distance over and over again, while using the compass to keep turning around. And Li Chunfeng is closing his eyes, Zhang Nan doesn't know what the principle of this closed-eyes pinching trick is, anyway, Li Chunfeng has a formal face.

Yuan Tiangang did not ask the hot air balloon to flutter, Zhang Nan did not open the hot air balloon, but stopped in mid-air, after a long time, Yuan Tiangang seemed to have finally chosen a direction, and at this time Li Chunfeng also opened his eyes.

"Oh? Chunfeng seems to have an idea. Yuan Tiangang glanced at Li Chunfeng with a smile.

Li Chunfeng said with a smile: "Doesn't the master already have an answer?" ”

"Then Chunfeng, you can tell me the location and location of this treasure land you calculated." Yuan Tiangang said.

"Eh, it's better for you to come to the master, if I calculate it, and the master you see that it is not the same place, then it will make my apprentice lose face." Li Chunfeng smiled and shook his hand.

"Alright, two Taoist leaders, don't play dumb riddles anymore, you can talk at the same time." Zhang Nan looked at the two guys who knew that they were still playing dumb riddles here, and he suddenly felt a little unhappy in his heart.

Now Zhang Nan finally understood what it was like for him to play dumb riddles in front of Li Er, and Li Er was confused.

"Haha, let's talk about it together." Yuan Tiangang said with a smile.

"In my opinion, it's better for the master to say the direction, and I'll point out the place I count." Li Chunfeng said with a smile.

"Good!" After Yuan Tiangang finished speaking, he said slowly: "The old Taoist watched the direction of the mountain, this treasure land must be in the land of the rising sun. And when Yuan Tiangang just said the word "day", Li Chunfeng's hand had already been raised and pointed to the east.

Zhang Nan saw that the two of them were walking so consistently, and they were a little suspicious that the two of them had discussed it, but Zhang Nan didn't know how to look at feng shui, even if the two discussed it, Zhang Nan didn't know.

"Qingquan, you can fly to the east with this thing now, the treasure land must be in that direction." Yuan Tiangang gave a very general statement, anyway, if you can't find it, Zhang Nan's heart is bottomless, of course, if these two people just say that it is a treasure land of feng shui, then Li Yuan must want to put the academy somewhere.

"Well, let's go." Zhang Nan said, and flew east in a hot air balloon.

While flying, Zhang Nan said: "I said two Taoists, although we want to find a feng shui treasure land, but it's almost enough, after all, the students are here to go to school, let's build this academy in the deep mountains and old forests, it's not convenient to go out to buy vegetables, let alone go back to Chang'an City." ”

In fact, what Zhang Nan said is not unreasonable, after all, it is now the Tang Dynasty, there is no winding mountain road on the Qinling Mountains like in later generations, and there are no wild animals that have been driven out and don't know where to go, the current Qinling Mountains are real primeval forests, and the animals in them will eat people.

"Well, I know, Qingquan you just fly, it's definitely not too far." Yuan Tiangang nodded, signaling that he knew.

Sure enough, after a while, Yuan Tiangang patted Zhang Nan's shoulder and said: "Stop, stop, it's here, the old Taoist temple is surrounded by purple qi, it is definitely a treasure land." ”

As soon as he heard that there was purple qi surrounding, let alone Zhang Nan, even Li Yuan craned his neck and looked down.

"Am I blind? Why can't I see the purple gas? Zhang Nan looked at the forest below, and it seemed that it was no different from other places.

"It must be here, Qingquan, you can find a place to fall." Yuan Tiangang said.

Zhang Nan had no choice but to obediently find a small open space and stop the hot air balloon. After parking the hot air balloon, Yuan Tiangang and Li Chunfeng didn't say much, but walked forward directly with the compass, as if to find the so-called "purple gas surrounding" place.

After walking for less than two minutes, Yuan Tiangang stopped, put away the compass, looked at the small open space in front of him and said: "This is it, this place is definitely a treasure of feng shui, and it is best to establish a academy here." ”