中老铁路四年贯通亚欧，中越铁路又何时能建成？

Core Insights - The China-Laos Railway has significantly enhanced its "Golden Passage" effect, facilitating new logistics channels between China, ASEAN, and Europe, while also accelerating the development of the China-Vietnam Railway [1][7]. Group 1: China-Laos Railway Operations - The China-Laos Railway has been operational for four years, with over 62.5 million passengers and 72.5 million tons of cargo transported, demonstrating its growing impact on regional economic development [1][2]. - Monthly passenger volume increased from 600,000 at the start to a peak of 2.2 million, with cross-border passenger transport showing significant growth [2][3]. - Daily cross-border freight trains increased from 2 to a maximum of 23, with total cross-border cargo exceeding 16 million tons, covering 31 provinces in China and 19 countries [3][5]. Group 2: Economic Impact and Infrastructure Development - The railway has reduced logistics costs by 30% to 50% for shipments from Kunming to Thailand and by 20% to 40% within Laos, acting as a new engine for regional economic growth [5]. - Over 40 industrial logistics parks have been planned along the railway, focusing on commodities like steel and non-ferrous metals, as well as modern industries such as new energy batteries and biomedicine [5][6]. Group 3: Future Developments and Plans - The "Three-Year Action Plan" aims to enhance the development level along the railway, targeting a total freight volume of over 120 million tons by 2027, with cross-border freight reaching over 27 million tons [6]. - The construction of the Lao Cai-Hanoi-Haiphong standard gauge railway is set to begin, further integrating the region into the Pan-Asian railway network [7][8]. - Vietnam is also planning to develop additional standard gauge railways to connect with China, enhancing cross-border connectivity [9].