Immortal Devouring Gu: Evil? What Evil Spirits Are Covered in Holy Light?

"My name is Jiang Lin. I got a Gu a few days ago following the guidance of the red light in my mind. I named it Immortal Devouring Gu." "My name is Jiang Lin, the strongest cultivator of the younger generation. Two days ago, my Gu swallowed a peerless beast. It seems to have become a little different." "My name is Jiang Lin, the strongest practitioner on this continent. I will use my Gu to protect the earth's last line of defense." "My name is Jiang Lin. This Gu in my hand has many wonderful uses. In just a few decades, I became the strongest practitioner on this continent. But now I have to make a choice, give up the Immortal Devouring Gu or completely fall." "My name is Jiang Lin. If the outcome of mastering the Immortal Devouring Gu is to fall, then fall!"