common heritage
3.The conception of the "World Heritage" was first established by UNESCO (United Nations Educational, Scientific and Cultural Organization) in the Convention Concerning the Protection of World Cultural and Natural Heritage (1972). There is epochal significance in the conservation of common cultural and natural heritage of human beings.
5.As a people, we must have a common understanding of our history and share a strong desire to safeguard our historical and cultural heritage. Otherwise, even though the Sun Yat Sun Villa has been saved, there is no guarantee that we would, in future, not pull down any buildings of historical value.

