Chapter 725 Diving into the Sea of Sand
The battle continued until this point, and the situation was clear.
As long as the MT Mechanical Cornerstone could hold on, everything would be easy, and victory was only a matter of time!
With the Mechanical Cornerstone as a shield in front and providing flanking attacks, Gao Fei and Jiang Feng were able to calmly shoot and snipe the sandworms, creating sneak attack effects.
Both of them mastered "close-range shooting" and "rapid shooting".
With three shots in a round, plus three sneak attacks, as long as two shots hit, a sandworm can be stably shot dead.
The crisp sound of gunfire, the wailing of sandworms, the roar of magic engines, and the collision of metal and flesh, reverberated over the desert.
Gao Fei, Jiang Feng, and Xiao Ma, who was driving the Mechanical Cornerstone, cooperated tacitly and quickly killed all the remaining sandworms.
After the battle, the three took a short rest in the cabin to restore their physical strength and magic power.
Ma Yun suddenly exclaimed, and forwarded a task reminder that had just been received to the team channel.
"Brother Fei! Sister Feng! The follow-up mission has been refreshed. Let's look for the entrance to the underground ruins nearby!"
"Where is the entrance?"
Jiang Feng stood up and looked out through the crystal window.
"Is it this?"
Gao Fei pointed to the small map on the screen.
Just above the small map, a flashing blue spot was refreshed, very close to the location of the mechanical cornerstone, less than 100 meters away.
Jiang Feng and Ma Yun looked at the direction marked on the small map.
Just in the sand pit that Ma Yun released the "fireball spell" just now, a reflective object can be vaguely seen.
Open the star disk, zoom in and take a closer look, revealing a broken spire on the ground.
On the spire, there stood a brass rooster, crowing with its head raised.
When a gust of wind blew over, the brass rooster on the top of the tower spun with the wind, and the cavity in its body hummed.
"That's a weather vane," Gao Fei pointed at the brass rooster and said, "a common decoration on the top of medieval churches."
"So, there is a church buried under the yellow sand, and the spire exposed in the sand pit is the church's bell tower?" Jiang Feng asked.
"It could also be a palace." Gao Fei replied softly.
"Whether it is a church or a palace, the ancient building buried under the sand must be very large, and there should be a lot of ancient artifacts inside!"
Ma Yun imagined excitedly, and couldn't wait to start the mechanical corner stone and dig down the sand pit to dig this ancient relic.
The mechanical corner stone was facing down, and the drill bit was buzzing and rotating, drilling deep into the sand pit. A lot of yellow sand was thrown out, like golden water splashes.
Half an hour later.
The mechanical corner stone had drilled about 50 meters underground.
With the help of the star disk reconnaissance, everyone was surprised to find that this mysterious building buried deep underground was actually a tower.
The mechanical corner stone is located at the waist of the tower. Including the attic, there are seven floors above the waist of the tower, each about seven meters high, and the interior has long been filled with yellow sand pouring in through the doors and windows.
Continue to dig down until the bottom of the tower, and it is estimated that there is still a height of about 40 to 50 meters.
From here, the geological structure has changed significantly, and the soft sand has been replaced by hard rock.
The drill bit of the mechanical corner stone collided with sparks on the rock, and it was worn out severely, and the progress of drilling also slowed down.
Ma Yun saw that the drill bit had become blunt and hurriedly stopped digging.
There was no spare drill bit in the tool box of the mechanical corner stone for replacement.
Ma Yun put on goggles and a breathing mask, and climbed out of the cabin with a compressed air bottle connected to the breathing mask by a tube on his back.
The girl crawled hard in the sand until she crawled to the stopped drill bit, performed the "complete repair technique", repaired the broken drill bit as good as new, and then returned along the original route.
It took more than half an hour to go back and forth.
Ma Yun went back to the cabin and shook her shoulders. Countless fine sands fell from her body and gathered into a pool at her feet.
"Fortunately, Xiao Yun chose the mechanic, otherwise we would be dumbfounded if the drill bit was scrapped." Jiang Feng took out a handkerchief and handed it to Xiao Ma.
Ma Yun waved her hand to refuse, took off her goggles and breathing mask, revealing her sweaty and red face.
She used a "magic trick" to remove the sand and dust on her body, and her face was particularly solemn.
"Brother Fei! Sister Feng! We can't continue drilling downwards for the time being!"
"Why, isn't the drill bit already repaired?" Jiang Feng asked in surprise.
"There are rock formations all below, which wear out the drill bit too much. It has to be repaired every ten minutes or so."
"Not only is it troublesome, but what's more terrible is that I don't have the ability to shuttle through the hard rock formations. Once the drill bit is damaged, I can't get close to repair it."
"Can't the drill bit be repaired from inside the cabin?" Gao Fei asked.
Ma Yun smiled bitterly and shook his head.
"The drill bit is made of solid metal, and there is a spring-filled structure between the cabin to provide buffering and shock absorption. Repairing the damaged drill bit from the inside is beyond my ability to cast spells."
"What should we do next?"
"There are two choices now." Ma Yun raised two fingers.
"First, let's take a long rest here. I will use the rest time to modify the mechanical cornerstone and set up a convenient maintenance passage between the cabin and the drill."
"In addition, I have to prepare the spell list again, memorize the 1st level 'Magic Equipment', add it to the drill, increase the enchantment level by 2, and temporarily strengthen the drill to a +2 drill."
"For every +1 enchantment level, the steel drill will increase its hardness by an additional 2 points, with a total hardness of +4, making it easier to dig rock formations."
"With my current mana, each enchantment can last up to 70 minutes."
"That is to say, every 70 minutes, I have to go into the maintenance channel, re-apply the 'magic weapon' to the drill, and cast a spell to repair the damaged parts."
"Wow! Is it so troublesome?" Jiang Feng smiled bitterly, "Just hearing you say that, I'm already having a headache."
"There is a more convenient way." Ma Yun continued, "We will not dig down anymore, we will get out of the mechanical cornerstone here, pass through the window of the underground ruins, and enter the building."
She turned and pointed out the window.
Under the illumination of the magic light source, the windows of the tower came into everyone's eyes.
Most of the windows were broken and filled with yellow sand.
But in the direction of Ma Yun's finger, a window could be vaguely seen, and the crystal window was preserved intact.
Through the window, the space inside the tower could be vaguely seen.
"The window opposite is intact, which shows that from this level, the interior of the building has not been completely filled with yellow sand. We can drill in and explore." Ma Yun continued.
"However, there is a small problem with doing this, which is that the window is too narrow and the huge mechanical cornerstone cannot drill in. We can only leave it outside and explore the interior of the ruins on foot."
