Chinese city growth has transitioned recently. Urban regeneration that fits local conditions has replaced rapid urbanization. City modernization and historic preservation often clash. Qingdao's ancient blocks need preservation and utilization to develop responsibly. This article aims to investigate the design interventions of adaptive reuse using in practical preserved projects. The study intends to give relevant participants interventions to consider while renovating historic districts to make theories, concepts, and plans guide, promote, and constrain the practice. It should also offer practical solutions to historic city renovation issues.