C204 Return to the outside world

"It's not something strange that can be used for self-defense." Lin Feng explained.

"How do I defend myself?" Yang Qingqing asked doubtfully.

"Look." Lin Feng pointed at a tree not far away. Then, he picked up two nails, circulated his zhenqi and threw the two nails out.

In the next moment, these two nails pierced through a big tree that needed two people to hold it in their arms