A century after the Great Cataclysm, a brand new profession was born. They control iron, copper, phosphorus, gold, silicon, carbon...Gao Neng has awakened a sacrifice system and the first task he received is to sacrifice the most gifted girl in the military. The reward will be a shocking increase in his talent : Iron 100%, Copper 100%, Tin 100%, Silver 100%, Gold 100%, Phosphorus 100%, Sulfur 100%, Silicon 100%...