In this way, when Luo Xiu will be able to reach the master-level engineering, he can only take one step at a time, this is not even a system to say, collecting rare materials and professional promotion is not so easy to complete, the expert level is a hurdle, let alone the master level. Pen & Fun & Pavilion www.biquge.info

Unless Luo Xiu changes the drawings again and continues to research more powerful engineering items, he can become a master engineer in the shortest possible time.

Putting away the design of the mechanical guard, Luo Xiu was about to go deep into the secret passage, but at this moment, the sound of a stream of water reached Luo Xiu's ears.

Thundered! Whoa!

Luo Xiu was also confused when he heard this voice, so he could only go and check.

The moonlight pendant emitted a bright beam of light, illuminating the passage to which it went, and the effect of the moonlight technique was far away, allowing Luo Xiu to clearly see the situation inside the underground secret passage.

The secret passage is surrounded by hard granite, and on the ground is a staircase with a thick layer of dust, and people will leave a series of clear footprints when they step on it, but except for Luo Xiu's footprints, there are no other people's footprints for the time being, which means that Luo Xiu may be the first descendant to come here.

The mechanical squirrel is in front, Luo Xiu is behind, walking forward along the underground secret passage, eating a trench and growing wise, and suffering the loss of the treasure chest mechanism just now, Luo Xiu is now more careful, his eyes are firmly staring at the movement in the secret passage, and his ears are also listening to the sound of the mechanism starting, and as soon as there is a wind and grass, he will immediately take action.

Stepping up the stairs from several places where there was no difference on the surface, Luo Xiu suddenly felt a vibration under his feet, and at the same time, the sound of clicking gears also entered his ears, although the sound was extremely small, it was still heard by Luo Xiu, who was highly concentrated, for the first time.

Sure enough, there is a mechanism!

Luo Xiu activated an escape skill on the spot, and his body jumped back in an instant, and at the same time quickly retreated, away from the position of the trap.

Just as Luo Xiu had just left the place, on the walls around the secret passage where he was standing just now, countless flying arrows suddenly shot out, clanging, flooding the positions of the front and back sections of the activation mechanism, and the flying arrows that ejected were scattered everywhere, and there was no room to dodge at all.

Several arrows bounced off the ground and walls towards Luo Xiu, but most of them were parried by Luo Xiu with the Dread Spear, with only a few abrasions.

"The weight of the mechanical squirrel is still too light, and this type of trap trap can't be triggered at all." Luo Xiu secretly exclaimed, the lethality of this flying arrow mechanism is really powerful, if you don't rush forward or retreat in time, you have to be shot into a hedgehog.

However, these traps are usually disposable and will be scrapped after one use, but the lethality of the arrow trap is undoubted, and if you don't have time to leave the trap in such a narrow passage, you can't dodge it with your body.

Fortunately, because of their age, many traps have been severely corroded, and they will produce mechanical sounds of different sizes when activated, and sometimes they will even be triggered with a delay, so as long as you maintain a high degree of vigilance, you can still dodge them.

But this situation did not exist in ancient times, but now it has become Luo Xiu's life-saving measure, unless it is the kind of magic trap that is triggered silently and instantly, such as the trap skill of Luo Xiu's own hunter class, otherwise it will definitely produce a sound due to rust.

It's a pity that magic traps can't be stored for a long time, as long as the energy is consumed with the passage of time, it will not be able to start, from ancient times to the present, for such a long time, no matter how powerful the magic trap will fail, it is no longer enough for Luo.

Luo Xiu took a few steps back again, waiting for the duration of the arrow trap in front of him to end, a large number of arrows had been stacked on the ground in a thick layer, the number was hundreds, when the arrow trap shot all the arrows, Luo Xiu conservatively estimated that thousands of arrows had been shot.

These flying arrows are also seriously decayed, they have been broken after being used once, and they cannot be used again at all, plus Luo Xiu is a hunter who uses firearms, and his enthusiasm for bows and arrows is not as serious as that of hunters who use bows and crossbows, but he stepped on the wreckage of the flying arrows, and he had no intention of cleaning it up.

If it were other hunters who used bows and crossbows, they would definitely collect the remains of the arrows on the ground, and at the same time, they would secretly curse Luo Xiu's high vision.

Because these arrows are made of stainless steel, and there are also demon-breaking runes made of Mithril on them, which can easily penetrate the magic shield of the mage class, which was a trap used against rival arcanists at the time, and also has a good penetration effect on other defensive skills condensed with magic.

It is worth mentioning that the arrows of the bow and crossbow can be recycled, and they also have durability, and they will be damaged if they are used too much, of course, they can also be repaired by the blacksmith, but the price of repair is more expensive than buying them again, unless they are extremely rare arrows, otherwise they are basically damaged and thrown away.

This kind of arrow wreckage can be used to recreate a bow and arrow that is even more powerful, and if you are lucky, you can even continue the attributes of demon breakers.

Luo Xiu's backpack now has a lot of steel and Mithril, all of which were removed from the mechanical guards outside, so there is no need to waste time collecting the wreckage of flying arrows on the ground.

In addition to the arrow trap, there are also explosion traps and sickle traps in the secret passage, which will explode directly like a mine after stepping on the front, but the system gives the player time to escape, and the explosion trap will explode with a delay of a few seconds, which is still easy to dodge.

And the sickle trap, unbelievably is that countless sickles are slashing in the secret passage at high speed according to certain rules, one knife is thousands of points of blood, and two knives can kill Luo Xiu, but it is also a small meaning for Luo Xiu, and it is not enough to threaten the laser trap when he once performed a mercenary mission.

Because he needed to avoid the trap, Luo Xiu walked very slowly, and after about half an hour, he finally came to the exit of the secret passage.

There was a cliff in front of it, and below it was a raging underground river, from which the sound of the water came from, and there should have been a suspension bridge here, but because of decay, it had been broken, and now only two piers were still on the edge of the exit, and the dark yellow rope wrapped around it had also become moldy and rotten, and it could not be used again.

However, this is not difficult for Luo Xiu, he has a special equipment Flying Bone Claw, although the length of the Flying Bone Claw alone cannot reach the other side, but Luo Xiu also has a rope in his backpack just in case, connecting the rope with the Flying Bone Claw, the length is enough to hook the rock bridge pier on the opposite bank, and the rest depends on the accuracy of Luo Xiu's flying cable.