C1443 Am I Stupid

Even if he wanted to conduct an experiment, he could only do so after his cultivation level has increased.

"Swish …"

The God Slaughtering Knife trembled slightly and instantly turned into a streak of black light, entering between Niu Thirteen's eyebrows and disappearing in the blink of an eye.

Niu Thirteen stood atop the blood-red ghost battleship, gazing at the distant world, deep in thought