Group 1 - The core viewpoint is that Hainan Free Trade Port and Hengqin Guangdong-Macao Deep Cooperation Zone are significant platforms for China's opening up, with distinct strategic positions and management systems post-closure [1] Group 2 - The scope of closure implementation differs: Hainan Free Trade Port covers the entire Hainan Island, approximately 33,900 square kilometers, while Hengqin covers only Hengqin Island, about 106 square kilometers, indicating a larger regulatory challenge for Hainan [2] Group 3 - The "first line" opening targets differ: Hainan aims to engage with all foreign countries and regions to enhance its global economic integration, while Hengqin primarily focuses on Macau to promote regional economic diversification [3] Group 4 - The "second line" management also varies: Hainan will regulate goods entering the mainland from the island, maintaining existing management for items, personnel, and transportation, while Hengqin will regulate goods entering the mainland but not restrict personnel movement [3] Group 5 - Specific implementation policies differ, particularly in tax and import/export management: Hainan will adopt a negative list for "zero tariff" goods, allowing a broader range of products compared to Hengqin's positive list approach [4]