Four pillars and eight characters are the years, months, days and hours expressed by heavenly stems and earthly branches. One column is dry and one branch is supported; Four pillars have four branches in four days, a total of eight characters, so four pillars are called four pillars and eight characters. The combination of cadres and branches, the ground branch has criminal harm.
For example, 201April-June-1April-20: 30.
Eight characters: Wu Jia, Wu Geng, Chen Bing and Wu Xu.
Among these four pillars: the sun branch: "Chen"; Time branch: "Ge". Chen Xuchong rushed to the other side.
Earth branch collision: there are also sub-noon collisions; Mao-you are in conflict; Xiang Chong was born in the shade; Rudder-Xianghai Zhuang; Chen-urge each other;
Ugly-no conflict.
Good luck.