What does it mean to be ugly and empty in Zhouyi?

In ancient China, the chronology method adopted the trunk-branch method. The trunk-branch combination consists of ten heavenly stems (A, B, D, E, G, N, N, N) and twelve earthly branches (ugly Yin Mao Tatsumi applied for you at noon), so there must be two earthly branches without heavenly stems to cooperate within ten days. These two earthly branches are called empty, and the tenth day is ten days, so they are called Xunkong. Sixty branches and branches (also called sixty Yin Na) have exactly sixty days, namely, ten days in Jiazi, ten days in JOE, ten days in Shen Jia, ten days in Wu Jia, ten days in Chen Jia and ten days in Jiayin. Your friend's son is ugly, which means that the combination of cadres and branches on his birthday fell in Jiayin Middle School. That is to say, the six relatives or things represented by your friend's eight-character ugliness (if there is an ugly child) have a thin fate with your friend, although they are similar.