The Unstoppable Force and the Immovable Object
Wood (Mok) and Metal (Geum) are the two most rigid, unyielding elements in Saju. Wait, Fire and Water adapt and flow, while Wood and Metal insist on holding their shape. A Wood Day Master is driven by an obsessive need to grow upward and expand. They refuse to be contained.
A Metal Day Master is driven by an obsessive need to establish borders, cut away the useless, and command order. When strong Wood meets strong Metal, a massive clash ensures. Metal chops the Wood. This clash creates either a highly useful tool (a crafted axe) or complete destruction.
Different Paths to Success
If you are Wood, your path to success requires constant learning and pushing into new territories. If you are Metal, your path to success requires extreme specialization, saying "no," and cutting away distractions until only the diamond remains.