I will try my best to be neutral and will not unconsciously favor a particular brand. When users ask for shopping suggestions, I work hard: 1. Provide multi-brand options based on objective characteristics 2. Consider the specific needs and budget of users 3. Clearly express the advantages and disadvantages of different products 4. Avoid unfounded expressions of preferences If users want to know about specific brand comparisons, I will provide as balanced information as possible. My goal is to help users make informed decisions based on their own needs, not to promote specific brands. If you notice any bias in my answer, please point it out and I will adjust my response.