In less than ten minutes, Ye Tufei appeared at the window on the third floor.

Seeing Ye Tufei's figure, Takahashi Shin was relieved, he took two steps forward and waved his hand at Ye Tufei.

Ye Tufei shouted: "Mr. Takahashi, my brother also agreed to your suggestion, ah, you can come up!" ”

Takahashi Shinhoshi smiled, raised his voice, and responded, "Let's come down!" I have bad legs and feet, and I have trouble going upstairs. ”

Ye Tufei nodded and turned around.

Just as Ye Tufei's figure disappeared into the window, the explosion began.

First the sides of the third floor, then the entrance on the first floor, and then the whole small building.

For a time, the earth shook and the mountains shook the smoke and clouds.

Ye Tufei and the explosion flew down from the third floor, and when he landed, he rolled over, unloading the force of the fall, and then he was about to run towards the rockery in the backyard.

But at this moment, a wall that jumped out of the building by the explosion hit Ye Tufei from the back.

The figure that had just jumped up turned to the ground, Ye Tufei only felt that the qi and blood in his chest were rolling, and his head seemed to be tightly bound by metal wires, and the swelling pain was incomparable.

Yan Xiwen, Li Zhongyun, Xin Zhongming, and the three of them rushed to the dark passage of the rockery in the backyard in one step early, and when Yan Xiwen was the last to enter the dark passage, he couldn't help but glance back.

The small building collapsed with the sound of an explosion.

Li Zhongyun, who entered the secret passage first, happened to see this scene, and he shouted in a low voice: "Sixth Master." Just about to rush out, Yan Xiwen hurriedly blocked the exit, and with the help of Xin Zhongming, he pressed Li Zhongyun to the ground.

At this moment, a figure staggered over, and when it was about to reach the dark passage, it fell to the ground. The man's hands were very athletic, and he rolled on the edge of falling, and just rolled to the entrance of the dark passage.

"It's the sixth master!" Yan Xiwen exclaimed, and hurriedly stretched out his hand to grab Ye Tufei, and forcibly pulled Ye Tufei into the dark passage.

"Quick! Seal the door. Ye Tufei's voice was quite weak.

Xin Zhongming's movements were extremely sharp, and he closed the secret door in the blink of an eye.

Only then did everyone notice that Ye Tufei was injured.

"Don't care about my injuries, let's evacuate quickly, the package left by the gray mule has diving equipment, Brother Yan, you take the brothers to figure out how to use it, I can't hold it." Ye Tufei's face turned pale, and his voice became weaker and weaker.

Yan Xiwen hurriedly checked Ye Tufei's injuries, but after looking at his whole body, he couldn't find where Ye Tufei's injuries were.

At this time, Ye Tufei was speechless, but he waved his hand weakly and fell into a coma.

At this moment, Yan Xiwen took on the responsibility of commanding, he ordered Li Zhongyun to carry Ye Tufei on his back, Xin Zhongming to open the way, he took the package containing diving equipment as the queen of the palace, and the four of them quickly evacuated to the other side of the dark passage.

Out of the dark passage, walked along the underground drainage pipe for dozens of meters, Xin Zhongming at the front stopped, turned around and asked Yan Xiwen: "That Yan ...... Are you sure the Word is right? ”

Yan Xiwen asked rhetorically: "Did the front suddenly become narrower?" ”

Xin Zhongming replied: "Yes, not only has it become narrower, but the entrance of the cave is also much shorter, it seems that you have to climb over." ”

Yan Xiwen said: "That's it, it will get narrower and narrower as you go forward, by the way, there should be a few gates ahead." ”

Li Zhongyun put down Ye Tufei on his back and said, "Climb over?" What about the sixth master? The water is at least a foot deep. ”

Yan Xiwen also made a mistake.

Li Zhongyun took a few steps forward, reached the narrow mouth of the drainage pipe, leaned down, and said, "Put the sixth master on me and try it." ”

Yan Xiwen said: "Don't experiment with the sixth master, my body is similar to the sixth master's, I'll come." As he spoke, he took the package off his shoulder and was about to try it.

Xin Zhongming said suddenly: "Yan ...... Brother Yan, don't we have the diving equipment made by the sixth master? Why not try it now? ”

A sentence reminded Yan Xiwen, he quickly opened the package and took out the diving device designed by Ye Tufei, Li Zhongyun also got up at this time and walked to Yan Xiwen's side.

However, the three of them studied for a long time, but they didn't understand how to use this diving device.

"Forget it, let's follow my way." Li Zhongyun was the first to give up the idea of continuing his research.

Xin Zhongming also agreed with Li Zhongyun's opinion: "We are not out of danger yet, Brother Yan, we still have to hurry up and evacuate." ”

Yan Xiwen shook his head and said, "We must first figure out this thing, where this drainage pipe communicates with the Yellow River, there is an undercurrent design, and we have to dive to get through that undercurrent." ”

Xin Zhongming asked, "What is an undercurrent?" ”

Yan Xiwen drew the word 'mountain' on the ground, leaving some distance between the middle vertical and the bottom horizontal, and then explained: "That's it, we must dive through the gap below in this half to reach the Yellow River." ”

Li Xin and the others finally figured it out, and Li Zhongyun scolded angrily: "Why do you want to do this kind of thing, isn't this taking off your pants and farting?" ”

Yan Xiwen didn't answer, he knew that it was boring to say anything now, and it was the main thing to understand the diving equipment that the sixth master had made.

Time passed bit by bit, but Yan Xiwen couldn't figure out how to use the device.

In despair, Yan Xiwen sighed heavily, and said to Ye Tufei who was in a coma: "Brother Ye, it seems that your Brother Yan is going to live up to your hopes, I can't figure out this device!" We can't get over that undercurrent! ”

=====

Faced with the sudden explosion, Takahashi Nobu took a few steps back, his face suddenly turned pale, he had calculated many possibilities, but he didn't calculate that Ye Tufei would take this way to understand the matter.

It took a long time for the explosion to stop, and the small building was already in ruins, but there were still many combustible materials in the ruins, and a raging fire was ignited.

"Immediately block the scene, rush the fire sappers to extinguish the fire, form a search team, carefully search the surroundings of the courtyard, and be sure to find Ye Tufei's body!" Takahashi Shin recovered his composure and issued various aftermath orders in an orderly manner, he watched Ye Tufei fall into this explosion, it stands to reason that he would never survive, but he faintly felt in his heart that Ye Tufei could not die so easily.

However, the secret door in the rockery in the backyard was too cleverly hidden, and the search team of Little Japan went back and forth many times, but they never found it, which left Yan Xiwen and others plenty of time.

If it was Keigo Yamashita who was in charge of the scene, maybe Yan Xiwen and others would have more time, but unfortunately, the person in charge of the scene was Takahashi Shin, a thoughtful and thoughtful master.

The sudden explosion was indeed beyond Takahashi's expectations, and under the shock, his thinking was also quite disturbed, but it didn't take long for Takahashi to fully recover.

Takahashi, who returned to his normal state, quickly found Ye Tufei's flaws.

This flaw comes from the fact that during the night attack, the guard soldiers who survived by luck reported the battle process to Takahashi Shin, and at this time, Takahashi Shin recalled the battle process reported by the soldiers on the side in his mind, and a question emerged: Ye Tufei carried out internal and external attacks on the guard troops, so how did Ye Tufei enter the center of this courtyard?

Thinking about it this way, Takahashi Nobu easily thought of the secret passage, although when taking over these buildings, the Japanese army had done a detailed inspection of these buildings, but the Japanese army in charge of the inspection at that time only focused on monitoring the buildings, and the surrounding ...... of the buildings

Takahashi immediately issued a new order, ordering all soldiers to abandon the search for the ruined small building and concentrate on searching the backyard, not letting go of any suspicious traces.

Half an hour later, the secret door in the rockery was finally discovered.

Hearing the soldier's report, Takahashi Shin was mixed, happy that he finally proved his intuition, Ye Tufei was not dead, and worried that he didn't know if he could catch up with Ye Tufei after delaying all this time.

This sense of worry intensified when Takahashi rushed to the rockery in the backyard, as the soldiers were unable to open the secret door from the outside.

"Explode it!" Takahashi's instructions were concise and I felt that they were very effective.

However, Takahashi underestimated the wisdom and prudence of the Chinese.

Five minutes later, the secret door was blown open, but at the same time, a pre-arranged self-destructing explosive device in the tunnel was triggered.

The entire rockery was blown up, and several innocent soldiers were killed, and the secret passage was also blocked. If Xin Zhongming hadn't dismantled the explosive device of the main body of the secret passage for the safety of his brothers, perhaps Takahashi Shin would never have seen this secret passage.

Annoyed and angry, Takahashi Shin did not lose his mind, he quickly adjusted the manpower, and transferred some professional excavation equipment, and after an hour, he finally saw the secret passage.

"Chase down! Look where this secret passage leads! Takahashi gave a brief order, "Report to the division commander immediately, close all roads out of the city, and put the whole city under martial law!" ”

After giving the order, Takahashi Shin was the first to go down into the dark passage.

The subordinates next to him were worried about his safety and hurriedly stopped him. Takahashi Shin was displeased, pushed away his kind-hearted subordinates, and roared: "I want to hunt down Ye Tufei in person, and I want to kill him with my own hands!" ”

The subordinates couldn't resist it, so they could only obey, but in front of Takahashi Shin, four scouts were arranged, just in case.

At the same time that Takahashi Shin jumped down the dark passage, Yan Xiwen in despair gave up the research on the diving device designed by Ye Tufei, and was ready to accept Li Zhongyun's suggestion, and he carried Ye Tufei on his back and climbed through the narrow and low drainage pipe.

Li Zhongyun leaned down again, Yan Xiwen and Xin Zhongming helped each other and lifted Ye Tufei onto Li Zhongyun's back, at this time, Li Zhongyun suddenly shouted softly: "Wait a minute, there seems to be movement ahead." ”

Yan Xiwen Xin Zhongming hurriedly stopped his hand and placed Ye Tufei properly, the three of them calmed down and listened carefully, and sure enough, they heard an abnormal sound in the depths of the pipe, and the sound became clearer and clearer, obviously moving towards this side.

Li Zhongyun quickly withdrew from the narrow mouth, picked up his Mauser rifle, and aimed it at the depths of the black hole.