The competitive test was a popular game in the world of Exos called 'Flying Crystal Racing'.
A Flying Crystal was a piece of magical equipment that was a bit larger than a watermelon with a smooth surface which was carved with a lot of power rune arrays. The spiritual energy contained inside it was abundant, too.
The Flying Crystal could drive the power rune arrays and flee in various directions with the surge of spiritual waves.
It could also trigger violent electric shocks when touched.
All in all, the sole purpose of a Flying Crystal was to escape control at an amazingly high speed.
Even when it was caught by someone, it would always try to flee with arc blowout and high-frequency oscillation.
The Flying Crystal used to be a piece of training magical equipment for battle-type Cultivators when they were alone.
For some strong Cultivators, they could release five to six Flying Crystals and catch all of them at the same time.