What should brothers and sisters pay attention to when they become sworn?

Becoming sworn (hereinafter referred to as becoming sworn) has standardized etiquette procedures, that is, on a voluntary basis, through consultation and agreement, choose an auspicious day, hang Guan Gong and other gods in places that everyone thinks are more suitable, such as ancestral temples, and put down three sacrifices, namely, pork, fish, eggs (one for each person according to the number of people) and a live chicken (the male is sworn as a rooster), and write them in chronological order. After the ceremony, everyone will bring a wick and "Jin Lan Music". Then, kill the chicken, drop the chicken blood into the red wine, pierce the middle finger of everyone's left hand (the woman's right hand) with the needle tip, drop the blood into the red wine, stir it evenly, sprinkle three drops on the ground first, and finally take a sip in order of age, and put the rest in front of the statue of Guan Gong. This form, some are also called "blood alliance". There is no limit to the number of people wishing, regardless of gender or age, but it must be an odd number. In the same year, the same sex became sworn, with men called brothers and women called sisters. It is usually carried out in adolescence, and most of them are like-minded, or in the same boat, or have their own needs. There were many manners and customs in the old society, but in modern times, there are generally not so many requirements.