"Whrrrr...."
In the deep cave, the deafening sound of the drill echoed continuously, stones flew between the drilling bits, dust covered the ground. Chen Yang drilled more than a dozen deep holes in the stone wall in one go, before finally stopping this operation.
From the moment he entered the photonic film, today is the third day. He spent two days starting from the location of the photonic film, drilling numerous deep holes along this deep tunnel in the stone wall to fix steel plates.
Indeed, for safety's sake, he constructed a twenty-meter-long steel tunnel. After fixing it, he set up a door with palmprint verification. In this way, an isolation layer was implemented between the photonic film and this world.
And the cable lines were also laid from the real world of the photonic film, spanning more than five hundred meters, with sensor lights and more than ten high-energy pulse lasers set up in the entire tunnel.
