The Steel Wood Manor contains steel trees that grows on special dark soil and produces Steel Wood. This enterprise for the Lin Family would increase the profits for each year by approximately forty percent. Steel Wood was produced here in abundance and this type of Steel Wood was just like quality steel. It was resistant to both water and fire plus it was thick and strong, extremely suited for manufacturing weapons and construction purposes. Thus, this type of Steel Wood was relatively highly priced, combined with the fact that the Steel Wood Manor was the only source of Steel Wood within a 50 kilometer radius.