The Contested Metropolis：Six Cities at the Beginning of the 21st Century the state of architecture at the beginning of the 21st century China's economic reform at the beginning of the 21st century The State of Architecture at the Beginning of the 21st Century Six Cities at the Beginning of the 21st Century International relations in the beginning of the 21st century 并列题名：International relations in the beginning of the 21st century Research on international relations of South Asia at the beginning of the 21st century Urban Architecture at the Beginning of the 21st Century City Transformed：Urban Architecture at the Beginning of the 21st Century