1.1.2 Cultural Sustainability

Sustainable development has been a significant issue since 1987.In this year, the United Nations World Commission on Environment and Development published a report Our Common Future which formally proposed the concept of Sustainable Development: “Development that meets the needs of the present without compromising the ability of future generations to meet their own needs.”^[4]The Millennium Declaration, which under the principles of the United Nations Charter, identified sustainable development with economic development, social development and environmental protection^[5].In 2010, the Agenda 21 for culture, the United Cities and Local Governments (UCLG) Executive Bureau passed the policy statement Culture: Fourth Pillar of Sustainable Development.Cultural diversity has become the new element of a sustainability strategy, which as “one of the roots of development understood not simply in terms of economic growth, but also as a means to achieve a more satisfactory intellectual, emotional, moral and spiritual existence.”^[6]Therefore, protecting heritage is not limited to the preservation of the building itself, but to the protection, inheritance and development of the related culture and spirit.In the context of urbanization, with the constant updating of various complex elements in a modern lifestyle, the cultural sustainability of architectural heritage sites is a significant issue.(https://www.daowen.com)