At the bottom of the unfathomably deep lake, the light gradually faded, replaced by utter darkness. Only the powerful diving helmet Liu Yun wore illuminated a limited area ahead. This was an unknown secret realm on Earth. The lake water was icy to the bone, as though it could freeze all life. The terrain at the bottom was complex and ever-changing, with jagged rocks, soft silt, and enormous caves eroded by time, forming an intricate maze.
Liu Yun held a specially made Straight Blade. Forged from the base's special alloy, it was incomparably sharp, retained excellent cutting performance underwater, and was resistant to corrosion. Clad in a skin-tight diving suit, he moved with agility, swimming through the water like a fish. As he descended deeper into the lake, the surrounding pressure steadily increased, but thanks to his formidable physique, conditions unbearable to ordinary people were nothing more than child's play to him.
Due to the water pressure, the Crystal Ball clung tightly to Liu Yun, continuously issuing warnings.
"Warning. A unit with powerful combat capability has been detected. Please return to the surface immediately."
Liu Yun was speechless. If he went back up now, wouldn't Jia Yi and the others laugh their heads off? Since he had gone down, even if he truly died here, he could not resurface!
"Machines really can't think reliably. You only need to assist me in battle with everything you have. Don't say another word besides that."
In this unknown darkness, Liu Yun cautiously explored using the sonar and radar systems on his helmet. Suddenly, a faint tremor traveled through the water. Then, a pair of dim green lights flickered in the darkness ahead. They were the Tentacle Beast's eyes, silently watching this uninvited guest. The Tentacle Beast's enormous body was hidden deep within a