Ren Shen (壬申) and Gui You (癸酉) represent the Jian Feng Jin (剑锋金). Shen (申) and You (酉) are the true positions of metal, with Shen (申) being the position of officialdom and You (酉) being the position of imperial prosperity. When metal is born and flourishes, it becomes strong, and nothing is stronger than the edge of a sword. Hence, it is called Jian Feng Jin (剑锋金).