On October 20th, the 30th China World Heritage Anniversary and 70th UNESCO Anniversary and National Park Mechanism Establishment Ad-hoc Symposium was convened in Chengjiang, Yunnan. Sanqingshan world heritage sent personnel to attend it. The symposium attracted 150 experts and scholars from home and abroad.  In the conference, Ministry of Housing and Urban-Rural Development issued China Global Natural Heritage 30th Anniversary Development Communique, and approved Chengjiang Fossil World Heritage, China Danxia World Heritage, Tianshan World Heritage of Xinjiang, II Karst World Heritage in South China. Participants jointly discussed the inheritance and development strategy of world heritages. On the basis of mutual agreement, Chengjiang Declaration aimed at upholding common value of world heritages was formulated.

By 2015 September, China had already had 48 world heritages, ranking number 2 in the world. 14 of them were both natural heritages and cultural heritages, making China number 1 in this regard. World heritages of China are diversified with outstanding features and play a very important role on the international stage.