Seeking an alliance between brothers?

Hold an oath ceremony for brothers with different surnames, bow down to heaven and earth and swear with blood. At the same time, it absorbs Buddhism, breaks the tradition of taking "teacher" as the surname of monk, and develops the spirit of brotherhood. When different surnames become sworn, in addition to their own surnames, they also take words with auspicious meanings such as emblems as righteous surnames, so they are changed to the same surnames to break the selfish departmentalism of each family and eliminate internal contradictions.