Question: Is it difficult to protect and maintain historical buildings? Analysis: Analyze the challenges of protecting historical buildings from economic, technical, and socio-cultural factors. Discuss the complexity and cost of repairing old buildings. Mention the level of importance society places on protecting historical heritage and the influence of policies.

問題：保護和維護歷史建築困難嗎？ 解析： 從經濟、技術和社會文化因素上分析保護歷史建築的挑戰。 討論維修老建築的複雜性和成本。 提到社會對保護歷史遺產的重視程度和政策的影響。