Inside the secret room. Gu Fengchun's face was serene, but he saw that his face was very sad and did not have the initial calm.

"What's wrong again?" With Gu Fengchun's current understanding of Chen Si, he knew very well what kind of psychological condition Chen Si's expression represented.

"I hope those guys out there don't touch that cipher wheel. However, with my understanding of Lao Xiao, this second goods will definitely try their luck. Chen Si shrugged his shoulders and said.

"Could something have happened to the cipher wheel?" Gu Fengchun said in surprise.

Chen Si nodded. After just a few minutes of contemplation, he had already sorted out his mind and had a general idea of the mechanism that was triggered. He said: "If I guessed correctly, if I re-read the book fan code now, there is only one possibility, and that is to touch some more terrifying mechanisms, not only in the secret room, but also in the passage outside." ”

"How?" Gu Fengchun didn't understand how Chen Si's inference came from.

Chen Si smiled lightly and said, "Just imagine, the mechanism here is not easy to be touched, only by very chance will be touched, and once it is touched, the secret room will be locked." The designer will definitely take into account that if this is an accident, if there is someone outside the secret room, he can rescue the trapped companion, of course, if it is his own person, he will definitely use the correct password to open the secret room to save people, but people who don't know the mystery want to try their luck and enter the password used before, then it will touch more mechanisms, and the consequences will be more serious, not only will the inside be affected, but even the people outside will also suffer. ”

Chen Si's words became more and more serious. Gu Fengchun broke out in a cold sweat when he heard this, and he hurriedly said: "Then don't think of a way, don't let them do such a thing." ”

Chen Si smiled bitterly and said: "The communicator has no signal, and the copper wall is too thick, so it can't convey any information to them at all, the only, the only thing that can be done, no!" Chen Si suddenly slapped his thigh and said, "We can blow it up!" Chen Si's expression was very excited. There are a lot of grenades in his backpack, although they may not be able to blow open the copper door that is nearly half a meter thick, but they can also use the sound of the explosion to remind Xiao Zhonghua and others outside to use explosives to blow up the door.

Gu Fengchun frowned, in a closed space, he dared to use a bomb, this Chen Si is crazy or stupid, the energy and impact generated by the explosion will resonate in the entire space, enough to shock the two of them to death or cause internal injuries. However, Gu Fengchun also knew that if he didn't take the risk, he and Chen Si might not only be killed or injured.

"Good!" Gu Fengchun also had three assault grenades in his backpack, which Chen Si forced into him. This is where it comes in handy. Chen Si also took out the grenade on his body, and after the two of them put the grenade together, Chen Si asked Gu Fengchun to run back, and he was responsible for detonating it. Gu Fengchun knew that Chen Si's understanding of arms was far above his own, so he naturally nodded and obeyed Chen Si's orders.

After Chen Si placed the grenade on the side of the door, after starting the grenade, he held back his strength, like a leopard, jumped up, and ran quickly in the direction of Gu Fengchun, this explosive force is enough to make countless Olympic sprint champions ashamed. But Chen Si didn't think he was running fast enough.

What consequences the explosion of the grenade in this space would have, Chen Si had fully estimated. The most serious thing is to be hit by shrapnel flying everywhere, if it hits the vital place, even he Chen Si will have to burp, and then slowly wait for the resurrection. And Gu Fengchun is not to mention, although this child is said to have an extremely mysterious blood inheritance, but the vitality is far less tenacious than Chen Si's monster, as long as it hangs, the possibility of resurrection is zero.

In addition to the shrapnel that flew around unruly, the energy generated by the explosion was also a danger that could not be ignored. These energy shocks can make people's internal organs bleed in an instant, and they will die a miserable death, and finally, it is the sound waves generated by the explosion in the enclosed space, these noises will definitely exceed the human ear can withstand the fraction, and it is normal to break through the eardrum.

Gu Fengchun ran nearly 100 meters at once, and in the process of running, he no longer cared about the priceless bronze model under his feet, his powerful feet, stepping on the relatively fragile places on the model, and deforming the things that those skilled craftsmen spent countless efforts to get out with one kick. However, Gu Fengchun still kept an eye on it, and he didn't step on the places where the mercury flowed. Mercury is highly toxic. He knew this little common sense at a very young age. When he was fifteen years old, he went to archaeology with his father, and in a noble tomb, he unearthed two uncorrupted child corpses, and his father told him that these two child corpses were poured with mercury alive and used for burial. At that time, Gu Fengchun was still young, and he was so frightened by these two child corpses that he couldn't sleep for two nights, leaving a shadow in his heart, how could he not be cautious when he saw mercury? Later, under the Burning Spirit Palace, the mercury pool gave him a lot of impression, and now, when he saw the mercury, he was very cautious.

"Squat down!" Chen Si didn't know when he had come behind Gu Fengchun and shouted loudly. Chen Si calculated the time very well. At this point, as soon as you crouch down, the grenade will explode. Hearing this, Gu Fengchun didn't think about it, and immediately stopped his steps, and at the same time opened his mouth, he wanted to reach out and cover his ears, but then he suddenly remembered that he was still wearing a helmet-like mask on his head, so he had to give up.

"Boom......" eight grenades made a loud noise almost simultaneously. The ground trembled violently, and Gu Fengchun suddenly felt that his head and chest had been hit by a big hammer, and there was a faint fishy sweet taste in his throat. There was also a buzzing sound in his ears, and the whole person was dizzy, as if he was stupid.

Shrapnel flew all over the sky, but it didn't hit the two, which was a kind of luck. But Chen Si and Gu Fengchun didn't feel that this was a blessing, the power of this grenade explosion was too powerful, and the breath in their chests stagnated.

"Is it all right, Feng Chun?" Chen Si said to Gu Fengchun. But even he himself couldn't hear his own voice. This is a temporary phenomenon of deafness, for this phenomenon, Chen Si is not surprised, if the body does not have this reaction, it is abnormal.

Outside. Tang Maiqiu and Xiao Zhonghua were discussing whether they should try to use a password or a bomb to rescue the people in the secret room, when they suddenly felt a shock under their feet.

The well-informed Xiao Zhonghua's face suddenly changed, and his first reaction was that the mechanism inside was activated.