上海和香港都是五口通商后崛起的城市，各扼长江口和珠江口，成为中西交汇、华洋杂处之地。经过数十年的发展，一个成为近代中国最大的工商业中心，一个成为华南金融贸易枢纽、联系海外华侨与祖国大陆的桥梁。这两个城市的华商很早即发生了密切的经济联系，由于相互沟通发展的 Shanghai and Hong Kong are all the cities that rise after the establishment of the five ports of commerce. They are both the mouth of the Yangtze River and the mouth of the Pearl River. They have become the place where Chinese and Western cultures meet with each other. After decades of development, one has become China’s largest industrial and commercial center in modern China, a bridge connecting South China’s financial and trade hubs with overseas Chinese and the motherland’s mainland. Chinese businessmen in these two cities got close economic ties very early and as a result of mutual communication and development