They took out professional measuring instruments and began to test the ground.
"This way! This is where the cave entrance is!"
Although the expert team did not know what they were looking for, they immediately understood what they were doing after looking at the instruments in their hands.
Hei Zi looked up at the other person: "Is this the place they just sealed off?"
"That's right! This is it! They had already started working when we arrived! Now it's been sealed off with quick-drying cement!"
Hei Zi nodded, then waved to the people he had brought with him: "Come over here! Let's check the hardness of the concrete!"
So a group of people quickly began to inspect the concrete area.
A few minutes later, they located the position, but the test results were quite disappointing.
"This entire area of concrete has completely solidified! And upon inspection, the thickness of the concrete here is approximately ten meters!"
"Ten meters...that's still much simpler than fifty meters! Did we bring the solvent?"
"We brought it! However, given the solvent's efficiency, we probably won't be able to dissolve the entire ten-meter-thick concrete layer within an hour!"
A flash of anger crossed Kuroko's eyes.
"Damn it! They moved too fast!"
Lu Yuan walked over and squatted down to examine the area: "Is there really no way out here? Aren't they going to inject a lot of compressed fuel gas into this place?"
"There's nowhere to get out! They're using a seepage method for injection, so we can't get in!"
Lu Yuan frowned: "It seems... we need to think of a way to stall for time! Two hours is simply not enough for us!"
Chen Zhongzheng nodded in agreement: "That's right! Even if we can leave here in two hours, we simply can't save everyone in the city! Right now, we can only try to buy ourselves more time by disrupting their work progress!"
For a moment, everyone inside the cave fell into deep thought.
Suddenly, Kuroko received a message on his phone.
"Who sent this message? Isn't the signal blocked here?"
"Oh! It's from Yanzi. Our communication with the urban area hasn't been cut off yet! It's just that we can't contact the middle management!"
Then, Kuroko looked at the contents of the message and a look of anxiety immediately appeared on his face.
"Damn it! Yanzi said the seepage in the urban area is expanding again! And many buildings are collapsing!"
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