This article utilizes the Hua Feng epitaph to reconstruct Wong Gein's family clan and understand how he became a main political player during the Western Jin Dynasty through political opportunism as well as making use of family, marriage, and friends. The Hua Feng Epitaph and historical documents show that, since the Western Jin, aristocratic families had counted heavily on the connection of marriage to strengthen their own political status. The Wong's family clan was a prominent example. Wong Cheng, Wong Gein's father, relied mainly on his uncle's clan to start his political career. He then became one of the founding fathers of the Western Jin Dynasty because of his support to Shi Ma at the end of the Tso Wei Dynasty. Wong Gein was rejected by the clan in his childhood since his mother was a concubine. He eventually inherited his father's title and began his political climb but he never gained family support like his own father due to his mother's status in the family. However, Wong Gein used his father's political influence to support Queen Gia during a political rivalry. He established his own political and social network and claimed the Yo and Gee territory. Within the territory, Wong Gein was able to unify the minorities, relatives through marriage, and his clan was his major support at the height of his power. However, the support collapsed when there was a conflict of interest among the supporters later on and ultimately it led to the extinction of his family. This article distinctly presents the rise and fall of an aristocratic family during the early Wei Jin Southern and Northern Dynasties and helps us understand the establishment and the progression of the noble families during the Wei Jin Southern and Northern Dynasties.