Core Viewpoint - The article discusses the common misconceptions about certain floor numbers in residential buildings and highlights the actual risks associated with specific floors, emphasizing the importance of making informed decisions when purchasing a home. Group 1: Floor-Specific Risks - The second floor is often avoided due to issues like sewage backflow, poor sunlight exposure, and increased risks of theft and noise disturbances, making it a less desirable option for buyers [3]. - The waistline floor, which is the level where decorative lines are located, suffers from significant drawbacks such as poor lighting from below, disturbances from above, and potential water damage from rain, leading to a compromised living environment [4]. - The top floor, while offering lower prices and better privacy, faces challenges such as water damage during rainy seasons and temperature control issues, which can detract from the overall living experience [6][7]. Group 2: First Floor Considerations - The first floor provides clear advantages like easy access, especially for the elderly, and lower prices, but it also has significant downsides including poor lighting, privacy concerns, and increased humidity, which can lead to pest issues [9].