"Too difficult to kill."

Su Xin looked at the corpse of the giant bear demon beast at his feet, a wry smile tugging at the corner of his mouth.

The physical defense of this giant bear demon beast was incredibly strong, especially its internal bones, which were exceedingly hard.

To kill it, Su Xin had to attack frantically for quite a while, expending a large amount of spiritual power, and even ended up ruining one of his swords in the process.