The Thunder God Universe Light Saber is a divine treasure; if it were placed in the outside world, cutting through rock and earth would be like slicing tofu.
However, within the divine spirit ore vein, the Thunder God Universe Light Saber can only leave a faint mark on this rock and earth.
The hardness of this rock and earth is almost equivalent to that of a divine treasure!
Such terrifying hardness can only be mined by beings above the Celestial God Realm. For those in the Mixed Universe Realm, even using a divine treasure, breaking off a piece of rock is as difficult as ascending to the heavens.
Wang Xu did not use his full strength with this strike; he merely wanted to test the hardness of this rock and earth.
Then, he increased his force, and the Thunder God Universe Light Saber suddenly pierced into the rock and earth, reaching nearly half a meter deep.
