The Fire element San He Combination is known as Yin Wu Xu (寅午戌). It involves the Earthly Branches of Yin (寅), Wu (午), and Xu (戌). When these branches are present at the same time, it is said to create an overly strong Fire element. This combination plays a significant role in understanding the balance and influence of elements in Chinese metaphysics, particularly in relation to personal destiny and character traits.