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A fan is an electrical appliance used to generate wind to provide air circulation and lower room temperature. Fans have become one of the common electrical appliances in people s lives. In terms of function the fan mainly generates airflow by rotating blades prompting air flow and forming a cool wind. At the same time this fan also has functions such as adjusting speed and timed shutdown to meet the needs of different people for wind. In appearance the fan is usually composed of a central motor and blades connected to it. The number size and shape of the blades vary depending on the type of fan. For example a desktop fan usually has three to four blades Fans can be used in many different places. At home people often place fans in bedrooms living rooms or offices to get comfortable airflow and lower room temperature. In addition portable fans are also widely used in outdoor activities or open-air gatherings in summer to bring coolness and comfort to people. Fans are suitable for people of all ages whether children teenagers adults or the elderly they can enjoy the coolness and comfort brought by fans. Especially in the hot summer fans have become a good helper for people to escape the heat. Generally speaking fans as a necessity in summer provide comfort and cooling effects by generating airflow. Whether at home in the office or at outdoor activities fans can meet people s needs for cool breeze and are suitable for people of all ages.