All the lamps that hang down fall into the chandelier category. The chandelier, whether with a wire or an iron pendant, cannot be hoisted too short to hinder a person's normal line of sight or to feel glaring. Take the chandelier of the dining room as an example, the ideal height is to form a pool of lights at the dinner table, but it will not hinder the view of the people on the table looking at each other. At present, the chandelier hanger has been fitted with a spring or height regulator, which can be adapted to the floor and requirements of different heights.