energy stone mine (grade-3) has successfully been upgraded.
Energy stone mine (grade-4): annual output value: 1339 spirit stones
……
Lu Qing only took a glance at the news of the successful upgrade and did not pay any more attention to it.
His eyes were nervously fixed on the huge rock in front of him.
He could feel an aura of life rapidly growing from the beating heart.
The frequency of the heart-like contraction was getting faster and stronger. Suddenly, countless silver lines burst out of the silver-blue light. These fine lines were formed by an even more brilliant and dazzling light. Through the light, Lu Qing could see that there were indeed many cracks on the body of the huge rock.
It was like an eggshell cracking.