Li Ling looked at these totems, and was stunned again, as if every carving of these totems was so unbelievable and unimaginable, and sometimes, those biological forms have exceeded the limits of human imagination.

Walking down the spiral underpass, it is a straight passage, Li Ling Zhilu said, and he has to return to the combination lock door with more than thirty changing passwords again, and that kind of combination lock is simply a miracle in the lock.

Moreover, the combination lock, Li Ling even doubted that there was any lockpicking expert who could open it, but just as he was thinking about it, a voice came.

"Not good." The flickering combination lock in front of Mandala was obviously not the same as it usually looked.

Li Ling also saw the clues, this combination lock seems to have been replaced.

"This combination lock is very different from the previous one, and it is obvious that the combination lock has been replaced." The mandala became urgent, walked to the combination lock in a few arrows, and quickly entered the password formula in his memory, but the password lock prompted that the password was wrong, please re-enter the password.

"Wrong password! Can't open. Mandala stopped his fingers for quick input.

"Could it be someone from the research institute who temporarily changed the combination lock?" Quiet lit her temple with her right hand and guessed with her brain.

"It's impossible, the personnel of the institute are all biological scientists, and they don't have the skills to change the combination lock, and even if some experts are asked to replace it, the senior management of the institute must first notify me of the latest password of the combination lock." Mandala is the gatekeeper, so she naturally has the right to know the password, and there is a trace of worry in her eyes, and she faintly feels that things are starting to get simpler.

Looking at such a calm person as Mandala, they all showed anxious expressions, and Li Ling also faintly felt that this combination lock was abnormal and not simple, and after carefully looking at the appearance and shape of this combination lock and the design structure, Li Ling suddenly had a flash of inspiration in his mind.

"Where do I think I've seen this lock?" Li Ling nodded his forehead and thought about it, then raised his head and said: "I remember, this is a composite combination lock, I once saw it in the home of a super-rich man in Miami, the biggest feature of this composite combination lock is that it integrates multiple password elements, astronomical geography, astrology, astrology and numbers!" It's an extremely difficult lock to open. Li Ling shrugged his shoulders helplessly.

"Astronomy and astrology! How can there be such a design of passwords. Quiet frowned, his eyes were stunned, and he said in slight surprise.

"There is such a lock, and there are many styles of combination locks, the more complicated, the more strange, the more difficult it is to open, if this lock, is really that kind of lock, it can only be said that it is completely impossible to crack in a short time." Mandala sighed slightly, and began to worry about what was going on inside the institute.

After all, the combination locks have been forcibly replaced, and the inside of the institute can still be safe and sound!

Li Ling began to fall silent, his eyes quietly staring at the combination lock with the flashing code light.

"Whether it is astronomy or astrology, in fact, it is inseparable from words, English is composed of 26 letters, so the key to the password lies in these 26 letters and ten Arabic numerals." When Li Ling was on a mission back then, due to his curiosity about new things, he knew a little about this kind of lock, although he knew a little about it, but it was just some skin, and to unlock this password lock, it could only be said that it was on paper, and it was far from it.

Moreover, twenty-six English and ten Arabic numerals are too large in disguise, and the sum of thirty-six is more than one or two points more difficult than the original password composed of only Arabic numerals.

"Is there a formula or something that can solve it?" Mandala stared at the lock unwillingly, eager to smash it with a punch, but Mandala knew that if he broke the combination lock, then this alloy steel door weighing 10,000 tons would be closed forever because of the opening of the self-defense system, and become a broken dragon stone.

"Formulas are useless for compound passwords, first, I don't know how many passwords there are? Second, I wonder how the letters and numbers are arranged in the code. Third, the composite combination lock looked even more advanced than the last time I saw it in the rich man's house. Li Ling looked at the mandala with a wry smile.

As soon as Li Ling said this, Mandala suddenly lost hope, Mandala grew up in the research institute since she was a child, and the research institute can be said to be one of her homes, if something happens at home, she is the most anxious.

"In that case, that's the only way to go." The mandala slammed his fist against the golden steel door, making a buzzing sound, and his eyes revealed a trace of cruel light.

Li Ling and Jing Jing both showed frightened expressions, Li Ling hurriedly grabbed the mandala and said, "What do you want to do, you don't want to break this lock, right?" ”

"No...... I'm not that irrational, and I know that breaking the lock won't help. The gloomy look in Mandala's eyes was still there.

"Where are you?" Li Ling asked cautiously.

"I just want to take Junzhi and Miss Quiet to enter the institute through another secret passage, but it has been set up as a forbidden area for the institute a long time ago, and no one is allowed to enter." The mandala's eyes were full of strange looks.

Exclusion zone, a forbidden area for the Institute.

Li Ling and Jing looked at each other, and they both saw a trace of confusion in each other's eyes.

"That forbidden area has not been open to the public for half a century, since the beginning of World War II, that passage has been set up as a forbidden area that no one is allowed to step into, the reason why it is set up as a forbidden area is because in the forbidden area, there are often some strange disappearances of people, therefore, the higher authorities issued an order that no one is allowed to enter without permission." Mandala saw that Li Ling and Jing Jing were both uninformed people, so he patiently explained.

"Mysterious disappearance?"

Li Ling and Jing Jing both said in surprise.

"I don't know the details either, but I've read some historical materials of the institute, and I learned from the historical materials that that forbidden area is like a huge black hole that eats people and doesn't spit out bones." Mandala Road.

Li Ling no longer seemed as surprised as when he first came to the research institute, after all, after going through so many things, his nerves could not be exercised, so Li Ling was tossed in vain.

"Could it be that there are some terrible monsters in that passage?" Because of his last trip to the ancient tomb, Li Ling is particularly sensitive to monsters and aliens.

"I don't know what to do." Mandala could only give this answer, and continued: "There are most of the gaps in historical information, instead of asking me, it is better to come with me and see it, maybe, there will be unexpected gains." ”

Li Ling smiled slightly, looked at Tranquility and said, "Quiet, why don't you go back first." That place is too dangerous. ”

"No, Miss Quiet can't be left alone, or she'll be kidnapped by other agents." Mandala said in time.

Quietly held back the smile on the corner of her mouth and said, "That's it, that's it, I can't be alone, I'm a wanted key person in the world." ”

"I think you want to see that mysterious forbidden area." Li Ling patted his forehead with the back of his hand, shook his head helplessly.

"Before we go to the restricted area, we need to prepare some weapons that are worth it." Mandala regrets that he didn't bring any weapons with him the last time he went to the Takaramakan Desert.

Li Ling felt that if he went to a dangerous forbidden area, he might encounter something terrible, and it was inevitable to bring some lethal weapons.

"Where to get weapons?" Li Ling wondered.

"Follow me." Mandala said, took Li Ling and the three of them back the same way, and went up to the abandoned factory outside.

The cool breeze outside is still there, and it has entered the end of winter at this moment, and the end of winter in Yanjing is unusually cold, but, strangely, it rarely snows in this winter.

Quietly looked up at the stars in the night sky, stunned.

"Sometimes, it's scary to think about, how vast the universe is, how small the stars are, not to mention the earth, human beings are placed in the universe, it is estimated that they are not even a speck of dust." The silence was emotional.

"Don't be foolish, life is extremely precious, although it is only a few decades, but compared to lifeless stones, we are already very lucky." Li Ling followed behind the mandala towards a warehouse.

For Li Ling and Jingjing's feelings about life, Mandala doesn't seem to be interested.

After the three of them came to a huge warehouse hidden behind a bush, Mandala kicked open the door of the warehouse, Li Ling looked at it, he thought it would be full of weapons, but there was nothing, this warehouse was empty and grassy.

"Where's the weapon?" Li Ling said suspiciously.

"Weapons! Not here, follow me. Mandala led the two of them to the very center of the warehouse, where a huge wooden plank was laid on the ground.

The mandala crouched down and uncovered the twenty-centimeter-thick plank on the ground, and suddenly the dust flew up, and it was obvious that no one had touched it for a long time.

When the planks were uncovered, there was an empty slot filled with all sorts of weapons, including rifles, machine guns, pistols, grenades, rockets, tear gas, smoke grenades, and even sabers.

"It's amazing." Li Ling squatted down excitedly, took an AK47, stroked the perfect gun body, and felt the excitement brought by the coldness of the gun.

"Choose a rifle, a pistol, and a cold weapon for self-defense, bring as many bullets as possible, and as for grenades and the like, you can bring some according to your personal interest, and if it's not too heavy." Mandala took a silver sand hawk pistol, held the pistol, raised his arm, three lines and one crosshair!

Although Jing Jing was also quite excited, he really picked up the gun and threw it away in an instant.

"It's so heavy!" Quiet frowned, and said quite unhappily.

"Try this." Mandala handed Quiet a saber with a blood groove, which was extremely sharp and almost fatal with a single blow.

The weight of the saber turned out to be acceptable, but Quiet would not use a knife, and it was estimated that even if he encountered danger, he would just cut indiscriminately.

"Forget it, Quiet doesn't need to bring weapons, it's enough for us to protect her." After Li Ling picked up an M16, he praised it again and again, and the most important thing was that there was also a 12.7 mm large-caliber sniper rifle in it.

"Commander, in the dark and narrow tunnels, such a sniper rifle is basically useless." Mandala interjected.

Li Ling shrugged helplessly, and reluctantly threw the super-powerful sniper rifle into the weapon pile.