As Xiao Chen deduced just now, Yue Ling really planned to let Xiao Chen go to that pharmaceutical company with him to investigate, and this was actually what Xiao Chen wanted, so when Yue Ling asked Xiao Chen's opinion, he immediately agreed with a wind chime.

Then Yue Ling said that she had to do some preparatory work by herself, after all, it was definitely impossible for non-employees to go deep inside, and she had to find a way to get a special access permission.

After Yue Ling sent Xiao Chen back to the school gate, he quickly left, and Xiao Chen immediately went to find Chen Meng.

Although it was already dark now, Xiao Chen was in a hurry to go to the villa area to collect all the energy black mist, so he still decided to work Chen Meng.

After Xiao Chen found Chen Meng, he first told Chen Meng about the strange things that the three detectives took pictures, but he didn't expect Chen Meng to have a surprised expression.

"Don't you think it's weird?" Xiao Chen asked.

Chen Meng smiled lightly: "Also...... There's nothing weird about it, is it...... After all, there are many of us in the ghost plane...... Something that is not understood. ”

Xiao Chenxin said that this is also true, for example, he himself has already created a doppelganger to confuse the opponent, maybe the four people with the same national character face will also use the same trick, and this trick can also transport this "doppelganger" to a long distance.

Thinking about it like this, Xiao Chen was a little relieved, because no matter what the result was, he could be sure that the reason why the four people with the national character face repeatedly went to the school to find trouble was 100% related to ghosts.

In addition, Chen Meng also said that Zhou Qiqi came to her again, of course, for Soho.

Soho still hasn't returned to school so far, Zhou Qiqi is very worried, and even thought of calling the police, but was stopped by Chen Meng in time.

Chen Meng said that he would wait for a while, at least judging from their previous experience, this Soho had already defected to Mr. Wang's side. Then this may mean that Soho's previous slap and beating was just a disguise, just like she pretended to be imprisoned.

In short, Soho's situation is not as terrible as they think, on the contrary, they have to be careful if this Soho will play any tricks.

Soon Chen Meng took Xiao Chen out of the school's fixed activity area and went to the villa area again.

Since Chen Meng has been in and out of here many times recently, and Yue Ling has also said hello, the security guards are now in a state of complete release for Chen Meng.

"Didn't you discover the energy black fog here before?" Chen Meng asked.

In fact, when Xiao Chen first arrived in this villa area, he only found a part of the energy black fog in Sister Hong's villa, and he did think that there might be more energy black fog inside the villa area, but it wasn't until today that these black fogs really appeared.

Xiao Chen immediately told Chen Meng about the situation, only to see Chen Meng nod slightly and say, "Hmm...... The book of Wanli Dragon City has also mentioned some of the problems of these energy black fogs, as if to say...... These black fogs only appear when some special ghosts haunt the vicinity. ”

"A special ghost?" Xiao Chen was a little puzzled: "What does this mean?" ”

"It's not explicitly mentioned in the book, but I reasoned through my own research...... I think...... It should be said that important ghosts are related to your system tasks. Chen Meng said slowly: "For example...... Qianqian? ”

Xiao Chen immediately felt that Chen Meng's words were very reasonable.

After all, when he searched the black fog at school before, he had met Qianqian many times, not to mention that the crystal doll that guided Xiao Chen to find the black fog in the first place was also given to him by Qianqian.

"Since it's a substance bound to the system, does it mean that other ghosts can't see it?" Xiao Chen asked.

"That's right." Chen Meng said with certainty: "And not only other ghosts, but also I can't see it, this kind of energy black mist should only exist for you, or ...... is for the holder of the current system. ”

Xiao Chen nodded, originally he was still a little worried about whether those damn spirit eating monkeys would destroy these energy black mist, but now it seems that this worry is also superfluous. And even when he entered Sister Hong's villa for the first time that day and met the spirit eating monkey inside, he didn't find this kind of black fog being swallowed.

Soon, Chen Meng took Xiao Chen to search all the energy black fog inside this villa area, during which a lot of energy black fog was located in other villas, but fortunately, Xiao Chen can now use ghost teleportation proficiently, and with the assistance of the wall piercing technique, none of these black fogs have been dropped.

It took them more than an hour before and after, and finally collected all the energy black mist.

Xiao Chen's ghost points during this period have increased by 3,500 points!

With the remaining 250 points from before, there are now 3750.

This is also the closest he has come to unlocking the third-level skill exchange interface, and if he is given a few more opportunities to collect energy black mist, it will not be difficult to unlock the third-level exchange interface.

However, Xiao Chen has now also discovered that the energy black fog is not found everywhere, such as the bars he had been to before and the streets near the bars, including Moonlight's Mountain Villa.

And there have been ghosts in the bar, so this proves from the side that Chen Meng's speculation is correct, it is indeed some special ghosts that are closely related to the system that are likely to leave energy black mist in a certain area.

If this "special ghost" is really Qianqian, it shows that Qianqian is still secretly helping Xiao Chen speed up the unlocking of system skills.

Bite!

Just then, the system was updated with a new main quest!

Main quest 16: Protect the dragon city and keep other ghosts from entering the villa!

Reward: 1000 Ghost Points

This is the second main quest related to Dragon City! It can be seen that the importance of Wanli Dragon City in this system is almost second only to Qianqian.

At the same time, Xiao Chen also noticed that there was a new hint in the Ghost House's defense settings menu.

In addition to the most original "wall", two new optional projects have appeared.

The first is the "Psionic Tower".

Psionic Tower: A fortified structure with a very fast attack speed, which can slow the ghost.

Cost: 200 Ghost Points

The classification of this psionic tower is under "Fortifications".

And a new item appears under "Defense Trap".

Lightning Trap: Place an area of lightning that deals high damage to ghosts that step into it. Recharges every two minutes.

Cost: 150 Ghost Points

Immediately after that, Xiao Chen heard several more rapid alarms from the system, and when he opened the map, he had already found a large number of light spots from the periphery of the villa area.

These spots of light don't seem to be the same as the ones they used to invade the Ghost House, they are more numerous, denser, and purple-black in color.

Xiao Chen hurriedly let Chen Meng take a look, only to hear Chen Meng say nervously: "This should be a ghost invasion incident!" The goal is Ten Thousand Miles Dragon City! ”

"Mr. Wang doesn't dare to send a living person, so he plans to let the ghost do it?" Xiao Chen asked.

"That's right!" Yueling nodded: "Mr. Wang doesn't seem to dare to offend Sister Hong easily, so he chose a means that Sister Hong can't detect, and it seems that this way can also avoid the surveillance of Moonlight!" ”

Xiao Chen immediately glanced back at Sister Hong's villa and found that Sister Hong didn't seem to be there.

It seems that it was all planned by this Mr. Wang, and what surprised Xiao Chen even more was that there were so many ghosts in the hands of this Mr. Wang?

But soon Chen Meng said: "It doesn't have to be humanoid ghosts, these should be some ordinary ghost creatures, otherwise there can't be so many of them." ”

Then Chen Meng tiptoed into the distance, and Xiao Chen quickly looked into the distance according to the signs on the map, and soon found that some translucent creatures like wolves appeared at the end of the field of vision.

These creatures are all of the same shape, Xiao Chen opened the ghost illustrated book for the first time and checked it, and sure enough, he found that there was an extra picture on it.

Name: Ghost Wolf

Rarity: Common

Synopsis: A ghostly creature that likes group action, is fast and aggressive.

It seems that like the previous two ghost bugs, they both like to act in groups, but their combat effectiveness is obviously much stronger than them!

Judging from the points of light displayed on the map now, the number of these ghost wolves must be at least more than a hundred, and it is impossible for Xiao Chen to deal with them alone.

"Quick!" Chen Meng urged at this time: "Unlock here!" ”

"Unlock what?" Xiao Chen was a little dazed.

"Unlock the House of Ghosts, of course!" Chen Meng actually took the initiative to pick up Xiao Chen's hand while he spoke, and called up the interface to expand the ghost house for him.

Xiao Chen also instantly understood what Chen Meng meant, she wanted to let herself use the ghost house's defense system to resist these ghost wolves, and this seemed to be the only way at this stage.

In addition, Xiao Chen also found that the specific unlock range can actually be adjusted manually, he only needs to expand- and zoom control to actively adjust the size of the unlock area, in order to minimize the cost of ghost points, Xiao Chen only temporarily unlocked the Hongjie Villa and a small area nearby.

"Quick! Lay out the two types of defenses you just had! Chen Meng continued to urge.

Xiao Chen was still complacent about the large number of ghost points he had obtained, but now he realized that these points were not used in the first place......

Unlocking the Lunait's own new area cost 1,500 points, and now it costs even more points to build the Ghost Tower and Lightning Trap......

But he has no choice now, because the wolves are closer, and if the main quest fails, he is likely to be wiped out...... When the time comes, no amount of ghost points will be in vain......

Xiao Chen immediately arranged four psionic towers on the four corners of the villa in a row, and then arranged eight lightning traps between the towers, which basically wrapped the villa roughly.