4天之期已到！中国打响造船业保卫战，第一个制裁的就是美国帮凶

Group 1 - The core viewpoint of the article highlights China's decisive response to U.S. provocations, specifically the implementation of special port fees for U.S. vessels docking in China as a countermeasure to U.S. Section 301 actions [1][3] - China has initiated three countermeasures, including imposing fees on U.S. ships, sanctioning five U.S. subsidiaries of Korean company Hyundai Heavy Industries, and launching an investigation into the shipbuilding supply chain for compliance with U.S. restrictions [3][7] - The article emphasizes that China's response is not a mere reaction but a strategic move to signal the consequences of siding with U.S. trade pressures, aiming to deter third parties from assisting the U.S. [6][7] Group 2 - The imposition of port fees is described as a direct retaliation, while the sanctions against Hyundai's subsidiaries serve as a targeted strike against those perceived as U.S. allies in the trade conflict [9][12] - The article notes that the sanctions against Korean companies may lead to significant operational challenges for them, including potential supply chain disruptions and increased costs, particularly in the shipbuilding sector [12][14] - China's approach is characterized as a comprehensive strategy to safeguard its industrial chain, combining immediate counteractions with long-term protective measures against external pressures [14]