1. From the numerical point of view, some people think that the number 4 is unlucky in China culture, because it is related to death and misfortune. But this view is not generally accepted, because different people have different beliefs and cultural backgrounds.
2. From the perspective of living experience, Building 4 may have some advantages. For example, it is cheaper and of better quality than other buildings. In addition, it is not easily affected by noise because it is far away from roads or streets.
To sum up, there are different views on whether the building number is 4. Some people may think this figure is unlucky, but from the perspective of life experience, it may also have some benefits. The final choice depends on personal preference and cultural background.