Excuse me, what is the meaning of a line above the eight characters in the general eight-character arrangement, such as seven kills and printing yen?

I, a living person, killed an official and a god of food. For Geng Jin and Jin Shui Sheng, Renshui is Shui Yang, the god of food, and Guishui is an official injury. For Jin Xin, human water is an official injury, while ghost water is a god of food. Join me and rob the money side by side. Geng sees Geng as on a par, while Geng sees Xin as robbing money. The person who gave birth to me is printed on the front and on the side. Primary gold, the primary soil is the positive print of gengjin, and bentonite is the partial print of gengjin; By analogy, the native soil is the partial print of Jin Xin, and bentonite is the positive print of Jin Xin. I am the official, partial official (seven kills), Huo, the official and partial official of Gengjin, and C is the official and partial official of Gengjin. Geng Shen, the founder of Japan, was born in early spring. Although he got help from Tujin, he is not weak. However, in the early spring, when the air was cold and the fire was needed to keep warm, everything sprouted. At noon, Ding Huo used God as an official, and the wealth star wood was a western god, which was transported from east to south. He likes to use God's land and is very lucky.