"What the hell is this thing?"
Wang Lu looked at the black sphere under his feet in consternation. However, before he could think of anything, with a 'whizz', the sphere flew up with a ferocious momentum, and the sudden large gravitational field change nearly pulled Wang Lu into the air.
In a flash, the black sphere had already suspended in mid-air, pausing for a moment. Then, it began to tremble violently, as if something inside fervently wanted to be released after being imprisoned for years. The black sphere rotated crazily in the air, but after a while, it just rushed madly to a certain direction, and sometimes, it returned with the same high speed, like a helplessly trapped beast.
