Creating a compass is actually very simple, you don't need to refine the flying sword so many steps, the compass is extremely simple in structure, just create a disc to hold the pointer, and then put a balanced pointer on the simple compass.

After half an hour of building, a large compass with a diameter of half a meter appeared in Xiao Cheng's hand, this compass was extremely simple, and there were no patterns on it, just like a golden disc with a diameter of half a meter.

The gold disc has a small bump in the center that allows the hands to be erected. Xiao Cheng weighed the weight of the compass, felt that the weight of the compass was even, and nodded with satisfaction.

Then, another piece of pure gold appeared in Xiao Cheng's hand, refining into a double-ended pointer more than a foot long, and at the tip of the pointer was a bayonet exactly the same shape as the Nine Xuan Sword, which could be inlaid into the finger-sized Nine Xuan Sword in the bayonet.

Xiao Cheng made a qiē, sacrificed the Huoli Sword, and inlaid the Huoli Sword on the bayonet on the pointer, and the Jiuxuan Compass was completed.

The light flashed in Xiao Cheng's hand, and a fire line belonged to the Red Flame Grass appeared, and at the moment when the Red Flame Grass appeared, the Nine Xuan Compass immediately reacted, and the end of the inlaid fire sword turned rapidly, trembling slightly and pointing in the direction of the Red Flame Grass.

Xiao Cheng changed the position of the Red Flame Grass, and the pointer of the Nine Xuan Compass also rotated, pointing to the Red Flame Grass at all times.

"Hehe, yes, yes, with the Nine Xuan Compass, it will be more convenient to find treasures rich in essence, and I don't know if the person who held the Nine Xuan Sword before thought of this method?" Xiao Cheng was overjoyed, and he came up with such a method with a whim, but he didn't expect it to be effective.

This compass can not only be used for the Huoli Sword to find the essence treasures of the Fire Element, as long as you change to a few other swords, you can find the essence of other Lines, which is definitely much more convenient than before.

"I just don't know how big the sensing range of this compass is!" Xiao Cheng muttered to himself. If you want to know the sensing range of the Nine Xuan Compass, it's very simple, just try it.

Xiao Cheng handed the Red Flame Grass to the clone, and the clone flew away quickly with the Red Flame Grass, while Xiao Cheng kept moving the pointer of the compass to test the sensing sensitivity of the compass.

As the doppelganger gets farther away, the compass's sensing sensitivity decreases. The speed of rotation became more and more sluggish, until it reached the position of about a kilometer, the compass lost its senses, and the pointer no longer turned.

Pass guò this test. The sensing range of the Nine Xuan Compass has been confirmed, and it has a sensing range of kilometers in radius.

The sensing range of a kilometer has changed dramatically compared to the previous range of three or four meters, and the treasures rich in the essence of the line within a kilometer cannot escape the induction of the Nine Xuan Compass.

"I didn't expect there to be a kilometer sensing range, not bad!" Xiao Cheng was slightly excited, the kilometer range of the sensing range made it more than a hundred times more convenient for him to find essence treasures than before.

And the kilometer sensing range is definitely not the limit, if you increase the length of the pointer and increase the leverage effect, you can also sense the essence treasure farther away.

However, the kilometer range is sufficient, and if it is larger, there will be interference. The more precise and sensitive the detector, the more likely it is to be interfered with.

Although the workmanship of this Nine Xuan Compass is a little rough, Xiao Cheng can't put it down in his hand, he has always been worried about how to improve the Nine Xuan Sword, but now it is definitely a happy thing because the compass has become simple and easy. It's even more exciting than breaking through a big realm.

"You are not born different, and you are good at fake things!hehe!" Xiao Cheng smiled slightly, feeling a sense of accomplishment, and then remembered a doubt that had been stuck in his heart, how to improve the Fengxun Sword.

Now he knows how to improve seven of the eight flying swords, but he doesn't know what to do with the Feng Xun sword, and the wind is not in the five elements. I have never heard of a spiritual object rich in the genus Wind, and there is no trace of it at all.

"Try it with the Nine Xuan Compass!" Xiao Cheng withdrew the Huoli Sword, inlaid the Feng Xun Sword into the pointer, shook the Nine Xuan Compass, and fiddled with the pointer.

Xiao Cheng dragged the compass on the top of the mountain, sometimes fiddling with the compass pointer. Just like a feng shui gentleman, in the end, he reluctantly found that the pointer did not react at all.

"Get a Nine Xuan Sword, and don't give a manual!" Xiao Cheng laughed to himself, and set up the Nine Xuan Compass vertically.

That's when it happened. The pointer of the Nine Xuan Compass suddenly moved, Xiao Cheng keenly grasped the slight change in the pointer, and his eyes couldn't help but light up, since the pointer reacted, it means that there may be some kind of popular essence treasure around.

Wind is the most elusive thing, formless, insubstantial, ethereal, and now that the compass has reacted, it is undoubtedly an excellent opportunity for Xiao Cheng to find a way to improve the wind Xun sword through the clues.

Xiao Cheng flattened the Jiuxuan compass again, and after calming down with the compass, he put the compass up again, and the pointer seemed to tremble, moving up with an undetectable trace.

Xiao Cheng saw the change of the compass pointer clearly, and couldn't help but be stunned, looked up at the sky, and said in astonishment: "Is it in the sky...... This ......"

What treasures can be hidden in the sky? Xiao Cheng didn't understand it, but it didn't matter if he didn't understand it, as long as the compass reacted, it could explain some problems, what if the wind and the wind came from the sky like the sky and thunder?

Xiao Cheng didn't have time to think about it, he sacrificed the Tianqian Sword and stepped on it, quickly flew into the sky, soared up, swept through the clouds to the stratosphere, and in the process of rising, Xiao Cheng kept overturning the compass, and the movement of the compass pointer became larger with the increase in altitude.

Seeing this phenomenon on the compass, Xiao Cheng became more and more convinced, the "wind" was in the sky, and the distance was still far away, he rose one or two thousand meters, and the pointer was just a little louder.

Although the accurate sensing range of the compass is only kilometers, this is only the effective sensing range of the instrument, not the true sensing range of the Nine Xuan Sword, the sensing range of the Nine Xuan Sword is obviously larger than the compass, but there are some subtle things that are difficult to perceive.

Xiao Cheng continued to fly upward, and the altitude continued to climb, and when he reached the position of 50,000 meters, he could not go any further, and he had reached the limit of the flying altitude of the imperial sword.

The height of Edgeworth's flight is limited, and it is not that you want to fly as high as you want, because the flying sword relies on the Heaven and Earth Yuan Qi to generate power to fly, and if it is too far from the ground, the Heaven and Earth Yuan Qi will become thinner, which will naturally make the flying sword lose the power to fly.

Xiao Cheng turned the compass over several times, and the compass pointer changed significantly, faintly pointing to the sky, obviously the "wind" was still higher and farther.

"Could it be that the Fengxun Sword needs the Heavenly Gangfeng to improve?" Xiao Cheng was stunned, looking at the night sky in a daze, Gangfeng is an extremely terrifying thing, even the Venerable does not dare to provoke lightly, and it is stored in the sky at a height of 90,000 li, forming a barrier, so that the cultivator cannot fly out of the Gangfeng at all.

――RO