Recently, many parts of China have been experiencing sustained high temperatures, and cooling products such as neck hanging fans, cooling ice rings, and ice cream patches are selling well on the market. Recently, the news of a 7-year-old boy in Nanning, Guangxi Zhuang Autonomous Region suffering from facial paralysis due to wearing a neck hanging fan while sleeping has become a hot topic, causing many consumers to worry about the safety of this "cooling device". Experts point out that prolonged use of neck hanging fans and blowing them towards the cheeks may cause damage to facial nerves and lead to facial paralysis. Recently, many patients with facial paralysis who have been treated in multiple hospitals have been caused by prolonged use of cooling devices such as electric fans and air conditioners, which blow cold air directly onto one side of the body or face. Once suffering from paralysis, the treatment time should be at least 7 to 10 days, and it usually takes 2 weeks for the symptoms to gradually improve. In addition, hanging the fan around the neck for a long time can also have an impact on the cervical spine, neck nerves, and blood vessels. In addition, the quality of lithium batteries used in neck hanging fans varies greatly, and counterfeit batteries can greatly increase the risk of product explosion or fire. Experts remind that do not use a neck hanging fan to blow forcefully on a certain area for a long time. Consumers should purchase neck hanging fans from legitimate channels and pay attention to product packaging, labeling, etc. In addition, when using a hanging neck fan, carefully read the product instructions and do not let water or metal objects enter it to avoid causing a power short circuit. At the same time, when charging the neck hanging fan, it is necessary to use the original charger and do not replace the charging device at will. How can we scientifically cool down under the scorching sun? Experts advise against blindly pursuing temporary coolness and ignoring potential health risks. When indoors, it is recommended to avoid air conditioning or fans blowing directly on the face. It is recommended to use a shaking head fan, and the indoor temperature should be maintained at around 26 degrees Celsius. When going out, be careful to avoid the hottest period and cool down by using umbrellas, wearing sunscreen clothes, and other methods. (New Society)