in memory of the 870th anniversary of Beijing as a capital 考古金中都：纪念北京建都870周年：in memory of the 870th anniversary of Beijing as a capital in commemoration of the 120th anniversary of Ma Lianliang's birth in commemoration of the 110th anniversary of issuance of large dragon stamps in commemoration of the 70th anniversary of the world's first computer eniac commemorating the 60th anniversary of Shengyang's liberation Commemoration of the 75th anniversary of the Convention of Paris Commemorating the 20th Anniversary of Beijing Forum: selected keynotes commemorating the 30th anniversary of reform and opening-up a special exhibition for the 870th anniversary of the construction of Beijing as the capital