The four-poster numerology stunt of railway gate can be divided into nine modes: formula, four houses, transport limit, transport limit, congenital fetus, 60-year-old elephant, elephant, yuan yun and time and space.
Four palaces: refers to ancestral palace, parents' palace, couples' palace and children's palace, each with its own usage and conditions.
Transportation limit: it means that each column is used for 15 years to control God, help God, Yuan God, bad God and Western God, and to argue about good or bad luck and regret.
Delay luck is limited: because this system does not need Universiade, it is to better interpret the things experienced in four completely different periods: childhood, youth, middle age and old age.
Congenital fetal element: this is an important part of this door. The so-called human life is a matter of heaven, and this "life" is the fetal element in this door.
Sixty Jia Zi Xiang Method is a divinatory image restored by sixty branches.