Hong Kong Display of Lights

Every night at 8pm, there would be a display of lights from the row of buildings along Hong Kong Island. From the harbourfront on Kowloon mainland, we can see the lights of the buildings flash on and off, change colours to form patterns, while laser beams further enhanced the bright and glowing atmosphere. It was quite nice.. but the practical critic in me kept nudging me with the thought: "What a waste of electricity!".