Nickel and Chromium are quite rare metals in nature. Concerned that Chu Suifeng and the others would not recognize them, Lin Ziyin carefully described the properties, appearance, and natural environment of the two metals.
Chu Suifeng, Si Jinhan, and Luo Yan listened attentively. In order to remember more firmly, the three of them took notes as Lin Ziyin spoke.
"With the weapons in hand, how do you plan to break the Fire Bull Formation?" Si Jinhan asked with a trace of respect.
"In the Fire Bull Formation, you must first stop the advance of the bulls, then only you can stop the advance of the men," Lin Ziyin replied, then started sketching on a piece of paper. "When a bull starts running, it moves very fast. Relying on human strength to block it is pointless. To completely stop a bull from causing harm, you must first break its hooves."