I. The Year Pillars of Male and Female Violate the Heavenly Clash and Earthly Conflict, such as Jia-Zi, Geng-Wu, Jia-Xu, Geng-Chen. Why can a few couples pass the 54-year-old threshold? It was found in practical research that: first, the year pillars violate the Heavenly Clash and Earthly Conflict, which clashes away each other's taboo gods; second, the favorable gods (喜用神) in both parties' four pillars are what they need. For example, male birth chart: Jia-Zi, Yi-Hai, Ji-Chou, Gui-You; female birth chart: Geng-Wu, Ren-Wu, Bing-Shen, Wu-Zi.