The green ball of light easily broke through the envelope of the purple grid, the green light dimmed in an instant and turned into a ball of black balls flying in unabated.

They are densely packed like locusts crossing the border.

"Retreat!"

Chen Yu shouted, the crystal sword in his hand swung repeatedly and shot down the flying black balls one by one.

Regardless of whether it was split or not, the black ball hits the ground and explodes with a "boom", the green light flourishes, and the hairy moss spreads in an instant, forming a new blockage wall.

Chen Yu reacted quickly and flew back, pulling a little frustrated Tong Yan, and quickly withdrew nearly 100 meters.

Forced to retreat by the green moss, Tong Yan asked depressed and puzzled: "Brother Yu, how could this be?"

Chen Yu stared at the green hair moss warily, and replied: "The power grid can only electrocute the green hairs on the outside of the green ball, but it cannot hurt the green hairs hidden inside."

Tong Yan didn't understand Chen Yu's meaning, she fluttered with beautiful eyes and looked at him suspiciously.

Chen Yu then explained: "It's like a barbecue on a big fire. The meat on the surface is simmered, but the meat inside is still fresh."

"Oh! Yan'er understands."

Tong Yan nodded fiercely as she realized it, and then asked: "The knife can't die, and electricity can't burn them through, what should I do?"

"Unexpectedly for the time being."

Chen Yu's eyebrows were locked tightly, and he couldn't think of a countermeasure for a while.

As he spoke, the newly formed green fur wall was full of green light, swaying green waves.

Upon seeing this, Chen Yu quickly pulled Tong Yan back.

Puff puff……

Another burst of machine guns fired generally, and the green fur wall sprayed out a lot of green balls again.

This time Chen Yu was prepared for a long time, and fled from a distance, escaping the green ball's range.

The flying speed of the green ball is not fast, and the range is only 20 to 30 meters.

However, whether the green ball hits the ground or hits the rock wall, it will explode instantly, spreading wildly, and immediately blocking the tunnel.

"Go, let's go back to the cave to find a way."

Chen Yu stared at the green fur wall tens of meters away, pulling Tong Yan and turning around.

If they do not retreat in time, they will not be able to escape the doom of being surrounded by green hair moss.

God knows whether these green moss are poisonous, and Chen Yu doesn't want to be wrapped in zongzi.

Forced by the green hair moss to retreat to the huge colorful cave, Chen Yu and Tong Yan both felt extremely depressed.

Tong Yan said in tears; "Brother Yu, can't we get out?"

"It's just that I can't get out for the time being. There is no place to trap brother to death."

Chen Yu smiled confidently, then furrowed his brows, racking his brains to think about the countermeasures.

It is obviously impossible to escape from the falling quicksand. The only hope is to vacate the tunnel with green moss and find another exit.

But those green moss knives can't kill them with chopping swords. Although they can be electrocuted, they can't be wiped out at one stroke due to too many numbers, and they grow very fast.

Wild fire, in spring.

Facing the powerful vitality of green hair moss, Chen Yu couldn't help thinking of this poem.

Shovel grass must be rooted!

But how can we quickly kill the green moss?

Chen Yu couldn't think of a good response for a while.

Fire work may be effective, but because of the lack of underground materials, he simply found a lot of dry wood to set fire.

"Brother Yu, here we are, here we are!"

Tong Yan pointed to the entrance of the tunnel in shock, exclaiming again and again, her pink pretty face was full of horror.

The pensive Chen Yu heard the sound and looked at the entrance of the cave. As expected, the green light was blooming there. He stood up with a gloomy face and said: "You stay here, I will go over and take a look. I have to find a way to plug the entrance, otherwise we will be wrapped in brown child."

If the green-haired moss were to grow into the cave, they would only have the bad luck of the package, and Chen Yu would absolutely allow such a thing to happen.

Looking around, Chen Yu patted a stalactite with a faint colorful light.

boom!

The tall stalactites were torn apart, and large and small stones were scattered all over the ground.

Chen Yu picked the biggest one and walked towards the hole with stride, preparing to seal the hole.

Slightly closer, you can see that the entrance of the cave is full of green moss, exuding a strange green light.

Without waiting for Chen Yu to step forward, the green light of the green hair moss returned quickly and introverted into the tunnel like a low tide.

Chen Yu was taken aback, and then laughed loudly: "One thing drops one thing, so they are afraid of these stalactites."

He threw the big stone to the ground, and Chen Yu laughed and passed away beside Tong Yan, "Pick up some gravel and take it, we can go out."

Thinking that the green hair moss had been in the cave and had not grown wildly into this cave, Chen Yu firmly believed that his guess was correct.

Tong Yan chose two rocks about the size of a football, and Chen Yu picked up the big stone that was dropped earlier, and the two went into the tunnel one after the other, and then walked side by side.

Without waiting for them to get closer, the green moss on the cave wall quickly receded, as if the tide was low.

"Wow, Brother Yu, you are so smart, you can think of such a way."

Tong Yan exclaimed excitedly, tilting her head to look at Chen Yu with a face full of admiration.

Chen Yu smiled proudly and proudly; "Brother is not only the most handsome man in the world, but also the most intelligent and powerful man in the world, hahaha!"

The slightly rugged and curved tunnel is not too deep, and it has changed to several kilometers.

Without the green moss in the way, Chen Yu and Tong Yan quickly walked out of the tunnel and came to a larger underground space.

The stone walls of this underground space are faintly fluorescent, with deep fog, and the whole space looks like a piece of fog.

Tong Yan turned her head and looked around, and asked suspiciously, "Where have all the green hairs gone, why are they missing?"

Chen Yu Zhuozhuo looked around, shook his head in a daze, and guessed; "I don't know, maybe you have retreated into the dense fog, be careful."

Without going out of the dense fog center, Chen Yu chose to walk next to the cave wall, looking for an exit.

He still heartily carved a mark on the stone wall at the starting position.

They both dared to put down the stone, and walked around the cave wall just like that, returning to the starting position.

It took them about an hour to walk down this circle. Not only did they not find the hole, but they were also tired and half dead.

Throwing two stones to the ground casually, Tong Yan sat on the ground against the stone wall and complained: "What the hell, there is no exit, Yan'er is exhausted."

Chen Yu also put down the big rock he was holding, rode up and looked at the dense fog.

The dense fog blocked the line of sight, and the visibility was extremely low. With his eyesight, he could only see within two meters.

Squinting his eyes slightly, Chen Yu used his ability to discern objects to "listen" to the movement in the dense fog, and vaguely heard the sound of rustling like an animal crawling, accompanied by the "sizzling" "sound.

Is there a snake?

Chen Yu was not sure, just because the sound he heard was very weak, he could not achieve the "imaging" effect.