In the entire fairy world, the strength of the Manman Continent is at the bottom. Even if Qin Shuang is killed this time, the other monks will know that if two people die here, they will be ridiculed for the rest of their lives.

But, they have no choice now.

They can't break the big formation in front of them. Qin Shuang hides in the big formation. What can you do to her?

Only when Sun Xingtian has developed a method to crack the formation.

In the Demon-Suppressing Tower, Qin Shuang spent three years and failed countless times, and finally successfully made a set of Zhuxian Crossbow. After the experiment in the Demon-Suppressing Tower, he nodded with satisfaction. Although the power could not threaten the Human Lord, it was not that her refining method was wrong, but that it was the ordinary material of refining.

Qin Shuang began to select materials. At this time, the decomposed materials were piled up in the Demon-Suppressing Tower. She selected the Chaos Clan skeleton of a Half-Step Human Lord. At this time, this Half-Step Human Lord was already in its original form, with a height of more than a thousand feet. It had 180 ribs. Seeing these 180 ribs, Qin Shuang's eyes lit up.

These ribs are just right to make crossbows. Qin Shuang removed 180 ribs, carefully looked at the curvature of the ribs, and needed to adjust them. The toughness also needed to be improved. However, the foundation was already very good.

Then she started to select bone spurs again. After more than half a month, she selected a thousand bone spurs, each of which was as thick as a child's arm, about three feet long, and the lowest was pulled from the Chaos Clan in the late Immortal Emperor's stage. There were also a bunch of large tendons drawn from the Chaos Clan.

After choosing the materials, Qinshuang came to the golden pillar again. Under the golden pillar, there were many metal blocks of large and small, all rare materials decomposed by the golden pillars. Qinshuang picked and picked, collected some materials, and brought these materials back to the refining room.

"Little Fire!"

The fire sprinkled out from Qinshuang's eyebrows.

"boom……"

Xiaohuo turned into a big fire. Qin Shuang used a single move to attract a rib and placed it on the fire. Xiaohuo's power was not weak, and soon the half-step human priest's rib began to soften. Qin Shuang used two Yuanli big hands and began to fiddle with the ribs, constantly adjusting the curvature until it reached a level of satisfaction.

Then take out a piece of metal and melt it, wrapping the melted metal liquid evenly on the ribs. The Yuanli covers the entire ribs and starts to squeeze slowly. A trace of metal liquid begins to penetrate into the ribs. The whole process is a slow process. It takes a full day for the embryo of the crossbow to be successfully refined. Qin Shuang holds the crossbow and watches it repeatedly, and then uses mysterious consciousness to explore inside and outside, and finally a satisfied smile appears on her face.

At this time, the crossbow embroidery was dark all over, giving people a sense of heaviness. Moreover, it was indeed not light, more than 10,000 kilograms. This was just the first step of the crossbow embroidery. Put it aside, Qin Shuang began to refine the second crossbow embroidery.

Nearly two hundred days later, Qin Shuang successfully refined the last crossbow embryo.

Qinshuang began the second step of making crossbows, refining bowstrings.

First, we prepared the large tendons of the Chaos Clan and then took out silk gold. This is an extremely precious metal. It is not only very tough, but also extremely ductile. The best material for making bowstrings. However, this material is no longer found now. This is still decomposed by the golden pillar decomposition Qinshuang from the broken immortal artifact collected by the ancient star.

Qinshuang financializes silk and then starts to combine silk finance into the large tendons. This process is slower than fusing metal into the ribs, and the mastery of heat requires more micro-adding. If incorporating metal into the ribs is a slow process, and putting silk finance into the large tendons is an extremely slow process.

Qinshuang took two years to refine all the collected large tendons. The next step was to refine crossbow arrows. Qinshuang first refined a thousand bone spurs into the same length and thickness, and then integrated metals with sharp properties into each bone spur, which was much easier than fusing large tendons. But there were more bone spurs, a total of one thousand. So Qinshuang took four years to refine these thousand bone spurs into crossbow arrow embryos.

In this way, Qin Shuang has spent ten years in the Demon-Suppressing Tower. After calculating, it has only been a few days since the outside world. It is estimated that the Earth Lord is unlikely to study the method to break the Great Zhoutian Sword Formation. However, Qin Shuang was still worried and came out of the Demon-Suppressing Tower and took a look. Sure enough, the Earth Lord was still immersed in understanding and deduction, so he patted Hua Taixiang's head:

"If you have anything, just call me."

"Wang!"

Qin Shuang looked down at the Xianyue Peak, and saw that the peak of the Immortal Emperor and the Half-Step Human Lord had left and should have gone back to seclusion. She opened the formation of the Xianyue Peak and entered the Demon-Suppressing Tower again.

This time, Qinshuang has been preparing to take a lot of time, because the following is to carve the runes, which is even slower. There are three parts to carve the runes: the main body of the crossbow, the bow string and the crossbow arrow.

The order from easy to difficult is crossbow arrows, crossbow bow body and bow string.

Why are crossbow arrows the simplest? Because crossbow arrows are disposable consumables. The runes of crossbow arrows are divided into three types from the general category: locking, sharpness, and blasting.

Locking the runes is relatively simple, which means it can lock the opponent under the stimulation of the monk's mysterious consciousness. Once it locks the opponent, it will chase the opponent until it hits the opponent or is destroyed by the opponent.

Sharp runes are much more complicated, including sub-categories such as sharpness, defense breaking, weight loss, acceleration, etc., and these sub-categories must be organically combined. The last blast is that once the crossbow arrow hits the enemy's body, the entire crossbow arrow will explode.

This is a relatively simple crossbow arrow rune pattern, and there are a thousand more.

Qinshuang began to carve runes, one by one, and day by day passed. After a hundred years, Qinshuang completed the last crossbow arrow.

Qin Shuang came out of the Demon-Suppressing Tower again. This time, she didn't want to see if Sun Xingtian had developed a method to crack the formation. If she wanted to study the method of cracking, the other party first had to break through the middle stage of the Grandmaster. The past hundred years in the Demon-Suppressing Tower, the outside world only had more than a month. With such a little time, it was not impossible to break through the Grandmaster realm, but it was very difficult.

What's more, Hua Taixiang didn't call her.

This time she came out of the Demon-Suppressing Tower because her cultivation reached the critical point of breaking through the fourth level of Human Honor. Originally, after the five elements were united, there would be no bottleneck in the Human Honor period. Later, she spent another seventeen years traveling to the Shangyuan Continent, allowing her to understand the unity of the Five Elements to reach an extremely profound state.

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Chapter completed!