Fang Zhen purified the molten gold, then used a pair of tongs to lift the crucible out of the electric furnace.
He poured the molten gold into a mold.
The size and volume of the mold were designed to form a one-kilogram gold bar once the molten gold was poured in.
The molten gold filled the mold, leaving the impurities behind in the crucible.
Fang Zhen switched to another pair of tongs, picked up the mold, and placed it into a bucket of cooling water on the side.
SZZZLE!
As the high-temperature metal entered the cold water, it made a piercing hissing sound as white steam billowed up.
A bucket containing over twenty liters of cold water was brought to a near boil in just five or six seconds, almost as if it had surpassed 100 degrees Celsius.
After waiting a moment, the gold cooled down.
Using the tongs, he lifted the mold from the bucket of cooling water. A one-kilogram gold bar had taken shape.
