The Public Hall was not equipped with air conditioning systems until 1962. Until then, air conditioning relied exclusively on blowers and ice. The mechanism was to fill the duct entrance of the basement air-conditioning room with crushed ice and use a blower to send the cooled air to the guest rooms. The cooling capacity was not comparable to today’s air conditioners, and a lukewarm breeze with a slightly cooler temperature was blown into the auditorium. In mid-summer, ice poles were placed in the aisles of the auditorium to create a visual cooling effect, but even so, the program still proclaimed “air-conditioned.” This kind of scene was common in all halls, a far cry from the recent trend of making a big fuss over a 2- or 3-degree rise in room temperature due to energy conservation.