This...... What's going on?!

The people who witnessed the scene just now were at a loss, and the person concerned, Hu Siyu, quickly covered his hands and wanted to cry.

"I-"

"Don't move." Du Yunfei walked over and grabbed her arm: "I'm a doctor, please follow me back to the boat, I must do a physical examination of you." ”

"I—I'm not sick, really, really, really......"

"Wait a minute!"

Su He suddenly interrupted loudly: "Haichen, drone...... Hurry up and fly! See if there are any zombies nearby!! ”

"Zombies?!"

Although I didn't understand why he shouted like this, everyone's nerves instantly tensed.

Haichen ran back to the ship, and the drone quickly lifted off and flew north, disappearing from view. Lu Rulan also followed over to check the surveillance screen.

Who knew that just five minutes later, the two of them actually shouted loudly at the same time-

"Yes! Yes! Hundreds...... No, thousands of zombies! It's all here! The fastest is only 10 km from the bridge!! ”

Zombies are coming?!

The bad news was like a thunderbolt from the sky, instantly shocking everyone.

It was Su He who reacted first: "Ten kilometers...... Then we'll only have half an hour left! Hurry up and find a way to keep this island! ”

Du Yunfei said: "Zombies can't swim, and Dian Bai is also afraid of seawater, so they won't come from the sea...... Bridge, we must defend the bridge across the sea! ”

"How do you keep it?" Lin Youqing was shocked, "The wall on the bridge is impossible to stop so many zombies. Or...... We withdraw to Thundering Island? ”

Duan Whale shook his head: "No, there are too few living materials on Thundering Island. Once you lose Foguang Island, it will be difficult to regain it. Half an hour...... We should still have a chance. ”

"The bridge can't be defended!" Haichen came up with an idea, "But maybe we can ruin it!" ”

Destroying the bridge - this is probably the only way to keep Foguang Island. But how easy is it to destroy a newly completed sea-crossing bridge?!

Du Yunfei analyzed: "The most direct way is blasting. Chemicals on Thundering Island, perhaps, can be used to make explosives. ”

"It's too far, it's more than half an hour just to go back and forth!" Lu Rulan proposed, "How about exploding with diesel?" ”

"The stock of biodiesel is limited, and it will definitely not reach the amount needed to blow up the bridge."

Su He shook his head, brushed a handful of bangs soaked by the rain, and suddenly his eyes brightened.

"Wait...... Maybe there's a way, let's go to the construction site now, hurry! ”

Everyone trusted Su He's judgment, temporarily locked Hu Siyu into the crew room of the cargo ship, and asked Duan Xingze to take care of the three children. Six adults hurried to the construction site.

Su He drove the construction truck and instructed everyone to wield a shovel and shovel to load the compost from the construction site into the body. At the same time, he handed over his backpack to Lu Rulan and Haichen.

"Haichen, you are responsible for using a drone to throw thorn bottles at the zombie horde; Xiaolan, you build a wall with thorns at the entrance of the approach bridge on the opposite bank, the thicker the better! The two of you are tasked with delaying the zombies as much as possible, you know?! ”

"Understood!"

The two of them responded in unison and immediately began to get busy.

The remaining three people collaborated with Su He and quickly loaded a cart of compost. The construction truck drove out of the gate of the botanical garden, stopped briefly by the corpse pool, and then continued to drive to the center of the sea-crossing bridge, turning around and coming to a stop.

Everyone jumped into the car and pushed the compost onto the pavement in a heap.

Su He took out a paper bag from the workbox and sowed the seeds of some plant into the compost. Du Yunfei punctured the plastic garbage bag filled with corpse liquid, allowing the thick green juice to soak into the compost.

"Be careful, everybody back off!"

Su He reminded him, and saw five small trees growing rapidly from the compost across the bridge deck, pointing straight to the sky like a sword. At the same time, the bridge beneath their feet began to crack with a small cracking sound.

"Can these trees break through the bridge?" Duan Whale expressed his doubts, "Even if the road surface is broken, there is still a steel bridge, even if there are only a few zombies left, they can crawl over...... You're not kidding, are you?! ”

"Who was kidding you? Do you know what kind of trees these are? Giant sequoia, Optimus Prime and Big Mac of the plant world. How much can it weigh? There are 2,800 tons on the ground! ”

Su He's explanation, Du Yunfei suddenly understood: "You want to use the weight of the tree to collapse the bridge?" But have you ever wondered where the weight of the tree comes from? ”

"Of course I thought about it." Su He stretched out his hand and pointed to the sky, "75% is moisture, and most of the rest comes from the air." This has been confirmed by scientists hundreds of years ago. ”

As they spoke, they saw that the five cedar trees absorbed the rain and carbon dioxide in the air, and in a blink of an eye, they grew to the height of a three-story building. Seeing that the compost began to loosen and turn white, and the growth rate of the trees began to slow down, Su He began to ask everyone to go separately to get the compost and corpse liquid.

At the same time, Su He did not forget to care about Haichen and Lu Rulan's situation.

"Where are the zombies now?!"

"There's still five kilometers or so to go." Haichen's report came from the intercom, "I'm delaying with all my might, but there aren't many thorn bottles!" ”

"It's okay, I've already planted the wall!" Lu Rulan took the walkie-talkie, "Three stories are so high, five or six meters thick, all of them are thorns, enough for them to climb for a while!" ”

Everything was going well, and Su He told the two of them to hurry to the bridge to meet. After a while, Duan Whale and the others, who went to get the compost and corpse liquid, also drove back, and everyone continued to pour liquid for the giant sequoia compost.

The rain overhead became heavier and heavier, and soon, the five giant sequoia trees grew to a height of 20 meters, and the diameter at breast height reached about 1.5 meters.

"Look at the ground!"

Lin Youqing pointed to the bridge deck around the giant sequoia, and the obvious depression could be seen with the naked eye, and the rainwater on the front and rear bridge decks was flowing continuously to the roots of the giant sequoia. If you feel it a little more, you can even see that the wind speed on the bridge deck is much higher, as if the giant tree is breathing the nutrients in the air of the greedy.

Su He estimated the weight of the giant sequoia: "Now the ground part of each tree weighs about 30 tons, and the roots may be about 50 tons...... But it's not enough! ”

Needless to say, everyone immediately split up to add compost and corpse liquid. After three rounds of savage growth, the giant sequoia has grown rapidly to a height of 40 meters and a diameter of about 2 meters. A rough estimate of the total weight has already reached 900 tons.

The deformation of the bridge deck was so severe that you could even hear the creaking of the steel supports. To be on the safe side, Su He asked everyone to retreat fifty meters, recalled Lu Rulan's drone and continued to drop corpse fluid.

Finally, the five giant sequoias slowly grew into a high wall on the bridge deck, and Haichen, who had been monitoring the movement of the corpses, also issued a loud warning.

"It's coming!! One kilometer from the bridge! ”

Before you know it, a full hour has passed. Despite repeated obstruction from the air, the corpses eventually approached Foguang Island. Hundreds of them were pressed by the black press, like the migrating wildebeest in the animal world, and in the blink of an eye, they rushed to the approach bridge of the sea-crossing bridge!

And standing tall in front of them was the thorn wall planted by Lu Rulan.

The surging tide of corpses did not stop because of this, and the zombies running in front were pushed from behind, constantly crashing into the sharp thorns of the thorny wall. The zombies in the rear climbed the stacked corpses and kept going up, gradually approaching the top of the three-story high wall!

Looking back at the bridge deck, the five giant sequoia trees are still growing, but perhaps because they are too large, they are not growing as fast as before. Twenty meters in front of and behind the trees, the deck was badly dented, and the roots of the trees were wrapped in severely cracked concrete blocks, and in some parts you could even see the steel beams underneath.

But the final collapse was not yet to come.

The situation was urgent, and Du Yunfei had to remind: "For the sake of insurance, everyone has returned to the engineering vehicle, and we must be ready to retreat at any time." ”

Duan Whale and Lin Youqing were in charge of driving, while the other four people jumped into the car. All they can do now is continue to use drones to deliver nutrients to the giant sequoias.

When the last bag of corpse liquid was thrown at the base of the giant sequoia, the top of the thorn wall was finally conquered by the black crushing corpses.

When the zombies climbed over the thorn wall, all that left was the original concrete and steel protective wall. Without any suspense, this vulnerable wall also quickly fell, and the zombies ran on the wide and flat bridge deck and rushed towards Foguang Island!

It was not advisable to stay here for a long time, so Duan Whale started the engineering vehicle and began to retreat to the pier.

"We ...... Failed? Lu Rulan couldn't believe it.

Haichen was also a little frustrated, but he didn't forget to comfort him: "Stay in Qingshan without worrying about no firewood, it's okay." ”

“…… I won't give up on this botanical garden. ”

Su He muttered to himself, his rain-soaked bangs hanging down to hide his expression.

Du Yunfei didn't speak, but reached out and took him into his arms.

But at this moment, there was a sudden loud bang in the west behind them!

The four men sitting in the car were terrified. Su He, who came back to his senses first, rushed to Haichen's side and looked at the picture footage on the drone controller.

I saw that the corpses had rushed to the location of the five giant sequoias in the center of the bridge. Blocked by the huge trees, the zombies had to slow down and converge in the sunken pit.

And the loud noise they heard just now was the sound of the overwhelmed steel beam breaking and partially collapsing bridge deck falling into the water!

“…… There is hope, there is hope, there is hope!! ”

After experiencing great joy and sorrow in an instant, Su He pressed his heart hard. Lu Rulan and Du Yunfei also immediately came over, staring intently at everything that happened next in the surveillance-

The small collapse soon stopped, but the damaged bridge was twisted and tilted due to the uneven load-bearing. In the wind and heavy rain of hunting on the bridge deck, the giant sequoia on the far right began to fall into the sea.

Immediately afterward, an even more incredible scene occurred......

Although the giant sequoia has collapsed, its roots are still clinging to the bridge. Under the action of gravity, a large piece of the bridge deck was torn off like this!

The collapse of the bridge deck triggered a chain reaction, and the remaining four giant cypress trees began to fall one after another. The strong roots twisted and tore at the bridge even more. Eventually, after a series of deafening loud bangs, the bridge finally collapsed completely!

Huge trees and steel beams fell from the sky and smashed into the vast sea below the bridge, gushing out huge waves. All the zombies gathered around the giant sequoia fell into the sea, and the rest were blocked by the broken bridge, so they couldn't move forward even half a step.

"We succeeded?" Su He was still a little incredulous, and suddenly laughed out loud in a daze: "We really succeeded?" ”

"It should be."

Du Yunfei also exhaled a long breath and reached out to pry Su He's bangs, "It looks like the island has been saved." ”

The drone was still hovering slowly over the bridge, watching the giant trees and zombies gradually be swallowed up by the deep sea in the vast rain. 166 Reading Network