Group 1 - The health department in Huaihua City, Hunan Province, has organized mobile medical service teams to conduct free medical consultations in communities and villages, bringing health services directly to residents' doorsteps [2] - The National Health Commission has reported a decline in flu activity across provinces, but emphasizes the importance of vaccination and personal protection during the cold season [4][5] - Traditional Chinese medicine suggests that joint pain during winter is due to cold invasion and recommends protective clothing, warming foods, and specific acupuncture points for relief [5][6] Group 2 - Current flu activity in China has been decreasing for four consecutive weeks, remaining at a moderate epidemic level, with common pathogens identified as influenza virus, respiratory syncytial virus, and rhinovirus [6] - Annual flu vaccination is necessary for effective protection, as the vaccine's efficacy typically lasts 6 to 8 months, and the composition changes yearly based on virus mutations [6] - Public awareness and training in emergency response, such as CPR, are encouraged to improve survival rates during cardiac arrest situations [9][10] Group 3 - Home medical devices, including electronic blood pressure monitors and pulse oximeters, are becoming common, but users must be aware of proper usage and limitations [12][13] - Home treatment devices should only be used after professional evaluation, while monitoring devices require attention to detail to ensure accurate readings [12] - The public is advised to understand the role of wearable health monitoring devices and not to rely solely on their data for medical diagnoses [13]