This is an account of the ‘middleman’ role Hong Kong has played in China’s Open Door Policy. It explains the paradoxical situation by which Hong Kong’s role as intermediary in China’s commodity trade is becoming more prominent in spite of the fact that since the development of the Open Door Policy in 1979 China has established many direct diplomatic, commercial and transportation links with the outside world. Hong Kong’s intermediary role is categorised by the author into four main areas: as a financier, as a trading partner, a middleman and as a facilitator of trade and investment. Statistics present in the book enable a detailed analysis of the costs and benefits of Hong Kong to China. The book makes an important contribution to understanding China’s various phases of economic reform and its interactions with global economic markets. Moreover, its arrival is timely, given the forced isolation of China after the events in Tiananmen Square in June 1989 as well as the fact that few years remain before Hong Kong ceases to be a British colony to become part of China. Dr Sung predicts that China’s demands on Hong Kong’s capacity as intermediary will increase dramatically when this happens.