The ever-burning light of marriage is generally to buy a pair, which means a pair. The ever-burning lamp of marriage, also known as longevity lamp, is a traditional custom, wishing newlyweds a long life. It is usually replaced by turning on the light, that is, turning on the light in the wedding room until the next morning to express a blessing. 1. According to the traditional marriage custom, the ever-burning lamp for marriage is one of the dowry of the woman. Of course, it should be bought by the woman before marriage and then taken to the man's house on the wedding day. 2, the ever-burning light of marriage, generally prepare 2 red lights, in pairs, meaning that the married life of husband and wife is prosperous and auspicious.