SUN Yan is a senior researcher and urban planner in the Cultural Heritage Conservation Center, Architectural Design & Research Institute of Tsinghua University. She holds a PhD in History and Theory of Architecture from Tsinghua University, and a Master of Science in Building Engineering from Politecnico di Milano, Milan, Italy. Her research and working experience concentrated on cultural heritage conservation, especially on conservation theory, World Heritage application and management plan. During the resent years, she participated in the preparation, conservation and management work of several cultural heritage sites for World Heritage Nomination in China, including: ‘Kulangsu, the Historic International Settlement’, Archaeological Sites of Hongshan Culture, Archaeological Sites of Upper Capital and First Tomb of Liao Dynasty, Beijing central axis. She also had rich experience in conservation planning programs of cultural heritage sites. She took part in formulating the Conservation and Renovation Plan of Beijing Central Axis, the Conservation and Management Plan of Mount Qingcheng and the Dujiangyan Irrigation System in Sichuan, Western Qing Tomb in Hebei and etc. The publications which she involved include: The 30 years of World Cultural Heritage in China, World Heritage and Sustainable Development, The Conservation of World Cultural Heritage and the Urban Economic Development.