Need. The wedding host will equip the wedding with a sound engineer. The stereo is also provided by himself, and he needs a subwoofer. The host also needs to prepare, marriage certificate, balloon ribbon and so on. The wedding, one of the five rituals in life, is a traditional ceremony, which is equivalent to the legal notarization ceremony of modern weddings. Its significance lies in gaining social recognition and blessing, helping newlyweds adapt to new social roles and requirements, and preparing to assume social responsibilities.