Although Haussmann's reconstruction project was large-scale and used many methods to double the housing rate, he always emphasized the unity and integrity of the city and never destroyed the entire urban landscape of Paris. This is very different from the results of contemporary old city renovation in China. After most of the old blocks in Chinese cities were renovated, especially after the reconstruction of residential areas, most of the buildings that appeared lacked regional characteristics, making the entire city less vibrant. , the space and form of the place become boring. When Haussmann renovated his houses, he followed the French neoclassical "aesthetic" standards of the 18th century and did not arbitrarily increase the floors. He only added the original 5-story building to 7 stories. The height of each building plus the attic was only is 30 meters. This is a more cautious approach than the 19th-century American approach to building buildings that stretched toward the sky.