Concrete Canvas: How Shanghai's Architectural Evolution Mirrors China's Modernization Journey Section 1: The Layers of History1. Architectural Timeline- Colonial-era Bund buildings (1920s-1930s)- Socialist classicism (1950s-1970s)- Reform-era experimentation (1980s-1990s)- Millennium megaprojects (2000s-present)2. Preservation Challenges- S