1. Literature research: in-depth study of historical documents, local chronicles, historical archives, academic papers and other literature materials, to understand the historical and cultural background, architectural style, historical evolution and other related information of Xiaoxihu historical block.
2. On-the-spot investigation: Organize professional teams to conduct on-the-spot investigation, including on-the-spot investigation of historical buildings, relics, streets and lanes, and conduct in-depth exchanges with local residents to obtain first-hand information.
3. Expert consultation: Invite historians, architects and other experts to participate in the project, and evaluate and guide the historical value, cultural connotation and protection scheme of the project.