北京的胡同、四合院与上海的石库门老房以及后来发展起来的老洋房,都是承载历史与文化,展现城市特色与品位的老式民居建筑及老街区。今天,人们不约而同地关注起这些老房子老街区了,常会感伤它们被现代化的高楼大厦日益蚕食的命运,从而更加留恋昔日的风景,同时也在积极思考它们所承载的历史价值与人文意义等。于是,关于老房的保存与改造问题,便一时间成为京沪两地关注的焦点。以保护历史与文化为己任的老房子、老街区改造,已同时在两地开展起来。北京与上海的建筑师们通过对老房采取保护性的改造,使原建筑及街区的独特形态尽量予以保留,也使其中特定的历史氛围得以再现。更突出的是,其中还融入了人与自然和谐相处的哲学思想。北京与上海的老房及街区改造,也在一定程度上激活了地块与房产的使用功能及经济价值。但由于 Beijing Hutong, courtyard houses, Shanghai Shikumen old houses, and later developed old houses are old-fashioned residential buildings and old streets that carry history and culture, show urban features and tastes. Today, people invariably pay attention to the old streets of these old houses. They are often sentimentally wounded by the fate of modern high-rise buildings that are increasingly eroded, and they are more reluctant to the old scenery. They are also actively thinking about the historical and cultural significance they carry. . As a result, the issue of preservation and transformation of old houses has become the focus of attention in Beijing and Shanghai. Renovation of old houses and old streets, with the protection of history and culture, has been carried out in both places. The architects in Beijing and Shanghai adopted a protective transformation of their old houses to preserve the unique forms of the original buildings and neighborhoods as well as to reproduce the specific historical atmosphere. What is even more outstanding is that it also incorporates the philosophical thinking that people live in harmony with nature. The renovation of old houses and blocks in Beijing and Shanghai has also activated the use of land and property and economic value to a certain extent. However, due to