海南封关，不单是为再建一个香港，关键是对美国制造业釜底抽薪

Core Viewpoint - The official launch of the Hainan Free Trade Port's full island closure on December 18 marks a significant strategic move for China, coinciding with the anniversary of the start of China's reform and opening-up in 1978, indicating that Hainan's closure is part of a broader national strategy [1]. Policy Framework - The basic policy framework post-closure will be "one line open, two lines controlled, and free within the island," allowing international funds and goods to flow freely into Hainan with zero tariffs, while maintaining customs declarations for goods moving between Hainan and the mainland [3][5]. - Goods processed in Hainan with an added value of over 30% will be exempt from import tariffs, enhancing the attractiveness for manufacturers [3]. Comparative Advantages - Hainan's geographical and demographic advantages over Hong Kong include a land area of 35,400 square kilometers and a population of around 10 million, with expectations of significant population influx for economic opportunities [5]. - Hainan has made substantial infrastructure investments, including a total road mileage of 42,000 kilometers and the establishment of the Yangpu Port, which can accommodate 150,000-ton foreign trade vessels at costs 30% lower than Hong Kong [5]. Manufacturing Attraction - The incentives for foreign companies to establish manufacturing in Hainan are compelling, as they can access the vast Chinese market while benefiting from lower operational costs compared to Southeast Asia [7]. - Hainan's strategic positioning allows it to potentially become a core trade hub in Asia, serving as a modern alternative to Hong Kong and the Pearl River Delta [9]. Currency Internationalization - The influx of foreign enterprises into Hainan is expected to facilitate the internationalization of the Renminbi, as transactions between Hainan and the mainland will likely be conducted in Renminbi, reducing reliance on the US dollar [9].