The master of metaphysics explained what Wang Jinzhi's fire looked like before it became a container.

Anyone with a strong character must be tempered by fire, because only fire can refine metals. Steelmaking requires a hundred tests. For example, the longer Jian Feng Jin is forged in the furnace, the sharper it will become. For example, the gold in the sea can only turn around when it encounters a thunderous fire, because the gold in the sea is buried deep in the seabed and submerged by a large area of seawater, and other fires have no effect on it at all. Only the thunderous fire can go deep into the seabed, extract the gold in the sea and make it a successful ship. This is the fact that Wang Jin got fire before becoming a container.