Core Insights - The article highlights the challenges and achievements of the construction of the Dali-Ruili Railway, particularly focusing on the difficult conditions faced by the construction team in Yunnan province [1][2][3] Group 1: Project Overview - The Dali-Ruili Railway includes the construction of the Gaoligong Mountain Tunnel, which is considered one of the most challenging railway tunnels to build due to the complex geological conditions in Yunnan [2][3] - The construction team, led by Zhou Kunpeng, has been involved in multiple tunnel projects in Yunnan, including the Funing Tunnel and the new Ping Tunnel, which collectively span 72.5 kilometers [5] Group 2: Construction Challenges - The geological structure in Yunnan presents significant risks, including high ground stress, high temperatures, water-rich conditions, and harmful gases, which complicate tunnel construction [2][3] - The Funing Tunnel faced issues with unstable foundations due to karst topography, requiring innovative solutions such as building a "bridge" within the tunnel to stabilize the base [3] Group 3: Personal Commitment and Impact - Zhou Kunpeng has dedicated over 12 years to railway construction in Yunnan, often at the expense of family time, reflecting the personal sacrifices made by construction workers in the industry [5] - The completion of the China-Laos Railway in December 2021 marked a significant milestone, improving transportation infrastructure in border areas and enhancing the quality of life for local residents [5]