Jun Qianqian sat on the ground, looking up at the peaks on both sides.

The so-called suspension bridge is a bridge that is hoisted up by ropes, and the foundation between the two cliffs is unstable, so you can only start from the mountain.

It's just that she, a high school graduate, has never done such a big project.

Gravity, the area under force, the load and length of the rope, the choice of fulcrum, and the influence of crosswinds.

Jun Qianqian held a ruler and squinted her eyes to estimate the proportion, if she is not good at building bridges, then divide this big problem into the topics she is good at, and break them one by one!

"Of course, the cost of manufacturing this bridge should be counted in the arrears of the Bluegrass tribe."

Jun Qianqian calculated the load-bearing in her mind, and did not forget to calculate the cost with Yabai.

"Is it really possible to build a bridge here?"

Everyone thinks that Jun Qianqian is whimsical, how can the bridge surface float in the sky?

"I'm not kidding, in our place, there are a lot of bridges across the canyon that are suspension bridges, and the Jinmen Bridge is more than a thousand meters long!"

Jun Qianqian seriously popularized science.

If the production process allows, it would be good if the load-bearing rope was made of steel, but it is a pity that even if Brother Daze personally goes into battle, the length and strength of the steel wire cannot meet the standard of making ropes.

However, the width of the suspension bridge should not be too narrow, if there is a better material replacement in the future, it can also be renovated and upgraded, of course she thinks that this bridge can cross the best car, but both ends of the bridge are mountain roads, and now it is still a time of the day, and there is no need to set it too wide.

She quickly made a list of the materials she needed.

Of course, hemp rope is the best produced by purple flowers, in addition, a lot of thick planks are also needed, and the weight of the bridge deck should not be too light, otherwise the wind will blow away.

In addition to the material, the more important thing is how to secure the rope to the top of the two mountains.

Piling?

Two cliffs not far apart are natural bridge pillars, and the mountain is covered with creeper-like vines and plants, Jun Qianqian asked people to set aside those plants, and determined that the main component of the mountain is stone, and the hardness is not bad.

The advantage of high hardness is that it is not easy to deform, but it also brings the bad news of how to fix the rope to the bare stone.

"Bomb the mountain?"

Luo Ze looked at the distance between the two mountains, not knowing what she was going to do.

"I'm still thinking about putting nails in the rocks, but you're thinking about blowing up the mountain?"

Jun Qianqian looked at Luo Ze in surprise, this person is getting more and more simple and rude!

"Can't you?"

Luo Ze touched the back of his head a little embarrassed.

"It's a way, too."

If you can blow up a circle of grooves with fire/medicine on the top of the mountain, and tie the rope to the mountain, it is undoubtedly very strong, but this amount of work is definitely much more than nailing.

Then just give them all a try!

Jun Qianqian immediately made a decision, anyway, now they don't have any materials in their hands, whether it's nails, hammers, let alone fire/medicine, she took the paper and pen she made up and listed the next plans on it.

"Looks like I'm going back to Purple Flower to fetch a lot of stuff and come back."

Jun Qianqian tore off the full list and looked at Luo Ze helplessly.

"I'll go back."

Luo Ze took the list and tacitly took over the conversation.

can only wait for the few key cultivated clansmen in the clan to grow up, and he, the patriarch, can say goodbye to the work of running errands.

"I'll stay and prepare."

Jun Qianqian can't jump this crack, and there is no need to let her toss with her, it's best to stay.

Luo Ze now regrets that when he entered the Blue Grass Tribe, in order to attract people's eyes, except for the two of them, he didn't bring a guard, and now that he is gone, he can only leave her alone in the unfamiliar Blue Grass Tribe.

"If you're worried, go and get back."

Jun Qianqian shook her sleeves, and what was hidden under the fluffy sleeves was the crossbow arrow that her eldest brother Daze had upgraded for her, and she could already hide it in her sleeve after folding.

She's a secret weapon now!

It's a pity that such a small folding crossbow arrow has twice the range compared to the *** that has been used before, and it can't be fired continuously, but the sacrifice of these functions is exchanged for concealment, and Jun Qianqian thinks it's still worth it.

"I'll take care of the priesthood!"

Lily of the valley bit her lower lip, looked at Luo Ze's suspicious eyes, and straightened her small body.

"You?"

Luo Ze looked at Lily of the Valley, this girl is indeed good at talking to Jun Qianqian, but her physique is far worse than Perlo, and besides, he is guarding against the people of the Blue Grass Tribe, how can he rest assured that Lily of the Valley?

"Okay, don't find fault with this and that, I'm here, I'm not going anywhere, waiting for you to come back."

Jun Qianqian didn't want to quarrel between the two sides, so she hurriedly gave Luo Ze a smooth hair.

"Huh."

The two-meter-tall purple flower patriarch could only swing the rope aggrievedly and jumped to the other end of the crack, he turned around and waved goodbye to Jun Qianqian, and the posture was like the Cowherd and Weaver Girl who were separated by the Milky Way.

Luo Ze took two helpers from the Blue Grass tribe and quickly disappeared on the path down the mountain, and now he just wanted to go back quickly and get the materials and build this magpie bridge.

Among the valley tribes, daily pilgrimages are being held.

The Moon Spirit and Tianyin of the altar must also participate, everyone stands, only the patriarch has a place to sit, and the Moon Spirit hides behind his brother and yawns secretly.

"It's definitely another big deal of nonsense today."

Moon Spirit muttered quietly.

"The Great General will definitely mention the attack on the Blue Grass."

Tianyin was also very impatient, he reached out and straightened the collar of Yue Ling, the two of them were wearing exactly the same clothes and combing their hairstyles, and when they faced each other, it was like looking at the reflection of the water.

"Alas, I really want to let him go out and die."

Yue Ling had long been tired of the patriarch's commands, and if it weren't for the people of the River Valley tribe, the two brothers would have ignored this mess a long time ago.

"I'm going to buy a weapon from the Purple Flower Tribe."

The patriarch of the river valley tribe, Hong Yu, said.

"Nope."

Amane shook her head and immediately voted against it.

"And what advice does the priest have?"

This conversation sounded like a ** smell, and Hong Yu was choked back when he dared to speak, and he immediately looked unhappy.

Did the two stinky boys deliberately go against him?

"If you want to buy it, it's better to sell the weapons of the White Rock Tribe."

Yue Ling wanted to leave the patriarch there, but he still answered patiently.

"The weapons of the White Rock Tribe are much worse than those of the Purple Flower Tribe!"

This is something that the entire southern tribe knows.

"You can't let Zihua continue to be strong, since you want to send money to others, general, at least you can't give it to Zihua."

Moon Spirit shook her head.

"What threat can there be from the Purple Flower Tribe, is the Lord Priest still worried that they will send troops to the door of the River Valley Tribe?"

It's this ugly title again, and Hongyu's face is gloomy.