Chapter 577: Utilization of natural forces

Seeing the other party nodding in shock, Field said happily: "Just drop hot molten iron or molten steel into the water, and it will naturally form a ball shape. Even if it is deformed, polishing it is much easier than knocking out a ball."

"Sir, how do you know this knowledge?" The little fox couldn't describe the shock in his heart. Field was embarrassed. It couldn't be said that he had learned it in his previous life.

"Just study and practice, read more and read good books."