On August 29th, a batch of Guizhou automobile wheels with a value of nearly 40000 US dollars departed from the Gelaoba freight yard in Zunyi and arrived directly at Zhanjiang Port in Guangdong Province via the western land sea new channel railway trunk line. They were then transported by the "Parallel Port" sea ring liner through Hainan Nanpu Port to Thailand. This was the first time that Guizhou had launched the "Parallel Port" business of the western land sea new channel and the first "Parallel Port+Western Land Sea New Channel" business in the country, marking a new step in Guizhou's inland opening exploration and serving the national strategic upgrade. Under the traditional mode, Guizhou's exported goods are generally transported by railway containers to coastal ports, unpacked, reloaded into sea containers, and then declared for export. The process involves multiple transfers and loading and unloading, resulting in high overall logistics costs, long processing times, and a high risk of cargo damage. The goods in this shipment were transported by rail sea intermodal "one box to the end", and after arriving at Zhanjiang Port, combined with the domestic and foreign trade same ship transportation policy, they were loaded onto the "parallel port" sea circular liner from Zhanjiang to Yangpu, and finally exported abroad. For the first time, it broke through the integration of the hinterland cargo source of the Western Land Sea New Corridor with the "parallel port" cross-border sea transportation network, forming a new international logistics model of land sea connectivity and multi-directional linkage. Parallel Port "is an integrated and innovative logistics model jointly launched by Zhanjiang Customs, Shenzhen Customs, and Haikou Customs, and linked with ports in Shenzhen, Zhanjiang, and Hainan. With the core of creating a maritime" circular liner ", it achieves the sharing and coordinated development of port resources in Shenzhen, Zhanjiang, and Hainan through the three characteristics of" integrated parallel domestic and foreign trade, parallel water land multimodal transport, and multi-directional feeding between ports ". From the perspective of logistics innovation, the combination of the "parallel port" policy and the Western Land Sea New Corridor, combined with the "multimodal transport, no container change in the middle" model, not only reduces the time loss in intermediate links, but also lowers the operational costs and cargo damage risks caused by container change, reducing the overall logistics costs by about 25% and significantly enhancing the competitiveness of products in the Southeast Asian market. In order to smoothly promote this business, under the overall guidance of Zhanjiang Customs and Guiyang Customs, Zunyi Customs and Zhanjiang Xiashan Customs have established a "territorial port" linkage mechanism. By intervening in the process design in advance and optimizing the customs declaration and inspection process, the entire chain of goods from Gelaoba to Zhanjiang Port for inspection and release has been smoothly connected. This cross regional customs cooperation model not only ensures regulatory efficiency, but also provides convenience for enterprises to clear customs at their doorstep, becoming an important support for the success of this testing business. The success of this testing business further demonstrates the vitality of the "13+N" regional cooperation mechanism for the Western Land Sea New Channel. As an open platform covering 13 provinces, regions, and municipalities including Chongqing, Guizhou, and Hainan, as well as "N" extended regions such as Zhanjiang in Guangdong and Huaihua in Hunan, the "13+N" mechanism provides institutional guarantees for the implementation of multimodal transport modes through policy coordination and resource sharing. In this business, the seamless connection between railway and sea transportation, as well as the efficient linkage of cross customs supervision, are vivid manifestations of regional collaboration under the "13+N" mechanism, providing replicable logistics solutions for enterprises in the Southwest region to explore RCEP markets such as ASEAN. All parties stated that starting from this test, we will continue to deepen the innovation of multimodal transport mode, and enable more high-quality products from Guizhou to efficiently go global through the Western Land Sea New Channel. (New Society)