<正> Everything in the universe undcrgoes metabolism. Buildings andcities are no exception. So city renovation is irresistihle. Modern so-ciety kas bestowed nowaday cities with characteristics, missions andfunctions that differ from old ones. The re--development of old cityis inevitable whether you Iike it or not, and that of the old city cen-tral block is of particular signincance.Every oId city fOrms its own central block during the develop-ment process. For instance, Wuhan in Hubei Province has fOrmed itscentral block, with Zhongshan Road as the trunk street, includingareas from the Yiyuan Road in the east to the Wusheng Road in thewest. Such a fact is undeniable:Althouth old city expands its urban occupation by constructing ahost of new cities and districts in its surrounding area, its centralarea remains unchanged and the atmosphere there becomes strongerwith the lapse of time.. The planners and administrators of the city have made great effOrts to create necessary conditions, hoping that inhahitants in