Although sending the giant mantis out of the mine can easily kill the mummy and even the phantom shooter guarding the mercury mine, it is too dependent on the giant mantis.

This capture of the mercury mine was originally a comprehensive test of the power of Lao Ma's ballista.

The sky was getting dark, and Cheng Kong didn't stay here too long, so he led the team back.

By the time everyone returned to Crow City, it was completely dark, and many wild creatures that didn't move much during the day began to move around the mangroves.

Cheng Kong took Murong Xue to talk to Sophia, while Lao Ma was a little excited to put the ballista on the city wall.

In Crow City, some wild objects will break into the surroundings of Crow City every night, and for Crow City, these wild things are undoubtedly a threat, and they must not be allowed to settle down, and they need to be removed as soon as possible.

When the old horse learned about this, he patted his chest and shouted, "Leave this matter to yourself."

And tonight is the first time, shooting crossbow arrows from the head of Crow City, and the field of vision is much wider than that of the mercury mine.

From the beginning of the tree wall of Crow City, to the mangrove forest, there are about 700 meters without any mangrove trees growing.

This is an inevitable phenomenon, as the general of Crow City, Sophia will not let the tree walls be covered with mangroves, in that case, it will be extremely disadvantageous for the defense of the city.

Think about it, there are trees outside, and people don't even have to prepare for the siege, they just climb up.

Although those mangroves and the tree walls of Crow City are trees, their essence is not the same.

Each of the trees that make up the Raven City tree wall is smooth and hard. When it grows up, it is as strong as steel, otherwise how could it be used as a material for the city wall.

And the mangrove tree will not be mentioned much. A lot has been said before.

In short, the old horse also practiced the ballista, set up the ballista, and after twisting the arrow, he shot an arrow towards the mangrove forest closest to the city wall.

This arrow was really powerful, and it pierced more than a dozen mangroves in one go before it was inserted into the ground.

Of course, this is also the reason why the old horse has lowered the angle of fire. If you raise it a little higher, you might be able to wear a few more trees.

On the city wall here, the old horse practiced with mangroves. had a lot of fun, and Cheng Kong over there gave Sophia time to send some people to clean up the perimeter of the city wall, and cut down all the mangroves so as not to affect the shooting of the ballistas. For quite some time. Cheng Kong is ready to let Lao Ma act as the main force to defend the city.

Sophia agreed to Cheng Kong's request without the slightest hesitation, and Sophia would not refuse anything that was beneficial to Crow City.

Next, Cheng Kong had nothing to talk to about with Sophia, and then said goodbye and left, fortunately, maybe it was because Cheng Kong brought Murong Xue here. Sophia also doesn't show any temptation, and is completely businesslike. so that Cheng Kong would not be twisted by Murong Xue after leaving.

Back at the top of the wall, Cheng Kong saw balls of white light flying towards the old horse on the city wall.

With the city as a backrest, the old horse's ballista can be considered to be the most powerful, and those wild creatures roaming in the surrounding mangrove forests are accidentally hit by crossbow arrows.

Cheng Kong stood beside the old horse, and he thought that his strength was much stronger than that of the old horse, although many scenes of wild animals being killed were blocked by some mangroves.

But there were still a few wolf-headed monsters that were pierced by crossbow arrows and then exploded into pieces of flesh in the sky, which Cheng Kong saw.

Seeing this scene, Cheng Kong couldn't help but be a little speechless, now the old horse is really a shotgun for a cannon, naked violent bombing.

This crossbow arrow is not very pleasant to shoot on the body.

The old horse's practice has been practiced for more than two hours, not to mention, it is really effective, when the end is ready to go to sleep, the time for the old horse to load the crossbow arrow and twist the bowstring has been shortened to less than two minutes.

This is a good start, but it will be difficult to reduce the time in the future.

After all, no matter how fast the old horse is, the loading of this ballista requires a process, not that it is pat on the buttocks, it is loaded, and the bowstring is straightened.

What's more, if you really enter the battle, whether the old horse player will shake a few times, whether he will be nervous and other questions may also affect the speed of loading the strings.

Of course, in any case, this is a good start.

The next day, Cheng Kong and his men set off again, and after arriving at the periphery of the mercury mine, everyone once again devoted themselves to the promising cause of cutting down mangroves, except for the old horse squatting on a pile of felled mangrove trunks, constantly practicing the steps of filling the twisted strings.

This is what Cheng Kong forced him to practice, no way, if the speed of the old horse to fill the twisted strings is increased, the battle will be powerful.

After all, Old Ma Ke didn't have the rapid-fire skills of Murong Xue, so he had to rely on practice.

Then another day of cutting down trees until the sun went down, and basically all the mangroves on the passage to the mercury mine were cut down, leaving more than a dozen mangroves on the edge of the mercury mine.

Cheng Kong didn't pay attention to these more than ten mangroves, and it was not too late to knock them down during the battle tomorrow, and if he cut down these trees at this time, he was afraid that he would directly lead the mummy out.

When I came back, it was the next morning.

This is also the last day of Cheng Kong's reign in the Hero World, if he doesn't finish the mercury mine today, the next time he comes in, maybe those mangroves will grow again, and two days of work will be wasted.

When he arrived at the place, the first thing Cheng Kong did was to use the felled mangroves to build several arrow towers for the old horse, forming a small arc to surround the passage entrance.

Except for the arrow tower in the middle, which is used by the old horse, the rest of the arrow towers are stationed on several lizardmen.

Each of these towers is about ten meters high, which will undoubtedly increase the range.

As for the other wolf-headed monsters, they are all piled up around the old horse arrow tower, in short, if you want to rush up from the ground, you have to see whether these wolf-headed monsters agree or not.

Of course, Cheng Kong and Murong Xue also stood on this arrow tower to protect the old horse on the spot, although it seems that there are a few phantom shooters in the mercury mine, and more than 30 mummies are guarded, who knows if there are other guards in the Ludao mine?

Before the battle broke out, no one knew what to do.

A few wolf-headed monsters sneaked over and slashed down the few remaining mangrove trees with their axes.

Cheng Kong could see clearly on the arrow tower, and the wolf-headed monster slashed, and the mummy on the other side of the mercury mine became commotion, and began to walk slowly towards this side.

Seeing the mummy move, the old horse immediately entered a state of excitement, and put his three hands on the ballistas, which had already been loaded and twisted, and only needed to pull the trigger, and the long crossbow bolts would fly out and fly towards the preset target. (To be continued......)