The staircase down the R & D center is a distance from the entrance. When Ishii and Miyako Watanabe talk, the voice is very low. Don't worry about being heard by the guy in Ninja suit.

However, the phone call gave Ishii a guess about the identity of the guy in Ninja Costume. After he hung up the phone, Ishii said in a low voice, "this guy may be Zhaodong Yihe!"

Chen Hui nodded and said nothing more, but his eyes were fixed on the direction of the stairway.

Yihe Zhaodong has more than one probe out to observe the situation, to see his performance, seems to want to assault.

Sure enough, Yihe Zhaodong rushed out fiercely.

Shot, missed again!

And Yihe Zhaodong is back to the original position!

The staircase leading to the underground laboratory is in the middle of the two rooms in the corridor. On the opposite side is a wall. After he sprang out, he immediately stepped on the wall. With the help of the rebound force, he rushed back to the original position.

There is no doubt that this is to attract them to shoot, to consume their bullets!

"He's fast." Chen Hui narrowed his eyes slightly and said, "it's hard to hit him. His purpose is to waste our bullets."

"How long will it take?" Ishii asked at this time.

The guy in charge of solving the monitoring problem started to crack the program when he arrived at the door, intending to let the lowered rolling shutter rise.

"About five more minutes!" This guy looks at the instrument in his hand and estimates the time.

The rolling shutter door is another program, which is completely different from the previous access control program. It takes a longer time to crack.

At this time, he moved again. This time, instead of attracting fire and wasting Ishii's bullets, he raised his hand and sent out concealed weapons.

Chen Hui's eyes are sharp. When Yihe Zhaodong raises his hand, he pulls the two people around him to one side. The concealed weapon hits the rolling shutter door and makes a "Ding" sound. It can be seen how powerful and powerful the concealed weapon is.

Chen Hui reaches out his hand to pull out the concealed weapon used by Yihe Zhaodong, observes it carefully, and hands it to Shijing Xiongyan.

"Ninja dart." Shijingxiongyan immediately said, at the same time understood another thing, said: "no wonder there are so many strange weapons behind the secret door."

Chen Hui looks at Ishii in doubt.

"Ninja is a product of the historical era. Their work at that time was mainly to carry out secret plans, sabotage, assassination, collect enemy's front-line intelligence, disrupt enemy's backup base and other espionage activities for the Lord." "So, ninjas often dress up as farmers on their journey," Ishii explained. Therefore, some Ninja concealed weapons are often transformed from farm tools, daily necessities, gardener props, etc. Most of these weapons were invented and forged by themselves, and only they know their usage well. Therefore, in the eyes of others, they are no different from ordinary daily necessities. This is also one of the main reasons why many Ninja weapons are lost. This is why we see those strange weapons behind the secret door. Those weapons are ancient Ninja weapons! "

After a pause, Ishii gave Chen Hui a simple explanation of Watanabe's conjecture.

Chen Hui nodded and asked no more questions.

Yihe white stone hiding in the corner, the right hand double fingers together erect, left palm up, holding the right hand, mouth recite words, and then from the body to touch a black round object, fiercely toward the ground, this round black object do not know what, but, a contact with the ground, immediately rose a burst of smoke.

Chen Hui, they can't see Yihe Zhaodong's action, but they can see the rise of the smoke!

Ishii's face changed. He had a bad feeling!

Only two minutes later, there was a sound of "poof". The guy who was cracking the program had a hole on his body, and blood flowed out of the hole.

Chen Hui's sharp eyes saw that the hole was a penetrating wound, penetrating from the back and penetrating from the front chest. The wound was flat and long, belonging to a knife wound.

This kind of change, let a person fall into panic completely, Ishii Xiongyan they although frightened, but didn't from disorderly feet, after encircling into a circle, all pulled the trigger.

"Legendary Ninja!" Ishii changed his face and said, "we're finished!"

Although the guy who cracked the program was killed, the cracking device is still running, and there are three indicator lights flashing red lights. As long as the three red lights become constant green, the rolling shutter door will rise!

"Hold on Chen Hui said in a low voice.

If Chen Hui hadn't seen the hermit art of the people in practice, he would be full of panic just like shijingxiongyan.

But Chen Hui has seen such a thing. The hermit in practice says that invisibility will lead to invisibility. Before invisibility, there will be a cloud of smoke. In this respect, although Yihe Zhaodong's Ninja can be invisible, it is much worse than the hermit in practice.

Chen Hui reaches into his arms, takes out a bottle of powder, and spreads it in a circle. The powder is floating, but it doesn't touch anything.

After the powder fell to the ground, it formed a trace on the ground. Chen Hui said in a low voice: "pay attention to the powder on the ground. No matter what kind of restraint he uses, there is only one effect that we can't see. As long as he comes over, he can't escape the powder on the ground, and there will be footprints when he steps on it!"

Hearing Chen Hui's words, shijingxiongyan's heart was calm. They all looked at the powder on the ground. As long as there were traces, they would shoot without hesitation.

At this time, only two of the three red flashing lights were left. Chen Hui said in a low voice, "we have to escape. It's a death to be trapped here sooner or later."

After Yihe killed that guy, he disappeared again and never appeared.

Soon, two red flashing lights, into a, only the last one left, the program will soon be cracked.

Yihe Zhaodong's voice sounded again: "you have many ways. I'll see how much powder you have available!"

Yihe Zhaodong's voice still sounded at the corner of the stairs. At the same time, Yihe Zhaodong also looked out.

Seeing his probe, Chen Hui immediately realized that his invisibility could not last for a long time, and could only last for a few minutes.

After he was invisible just now, he came to kill the guy who cracked the program, shijingxiohiko. They immediately fired a gun, which led him to have to retreat. Just for a while, his invisibility was useless. According to this estimation, the invisibility of Yihe Zhaodong can be maintained for three minutes at most!

With the sound of "drop", the last flashing red light of the device that cracked the program turned green, and the rolling shutter began to rise up.

Chen Hui and Ishii also relaxed their hearts.

"Go out later, don't run out, shoot back, don't worry about bullets, run towards the workshop!" Chen Hui whispered.

Shijingxiohiko has no way to deal with Yihe Zhaodong's invisibility. He can't help but look at Chen Hui. He doesn't understand what Chen Hui asked them to do in the workshop. Wouldn't he be caught in a jar?

"If you want to crack his invisibility, you have to go to the workshop. I have no medicine powder on me!" Chen Hui said in a low voice.

"Good!" Ishii replied in a low voice that seeing him probe again, he raised his hand with two shots, which forced him to withdraw again.

At last, all the shutter doors open. Chen Hui shouts "run" and rushes out first. Shijingxiohiko and they follow Chen Hui to run out. At the same time, they raise their hands and shoot back.

Yihe Zhaodong just jumped out and was forced back to the door.

"You can't run away." Yihe Zhaodong said with a smile.