Group 1 - The Chongqing to Jiangjin section of the Yuxia High-Speed Railway (Yuqian High-Speed Railway) has entered the trial operation phase, expected to open in the first half of this year, making it the first high-speed railway to be opened this year [1][2] - The Yuxia High-Speed Railway is a key part of the national medium- and long-term railway network plan, with a total length of approximately 250 kilometers and a design speed of 350 km/h, significantly reducing travel time from 4 hours to under 1 hour between Chongqing and Jiangjin [2][3] - More than 10 high-speed railway lines are under construction, aiming for completion and operation within this year, contributing to over 2500 kilometers of new high-speed rail lines [2][4] Group 2 - The Shenyang to Changbai Mountain high-speed railway has completed track laying, laying a solid foundation for its opening, with a total length of 430 kilometers and a design speed of 350 km/h [2] - The Xiyuan High-Speed Railway has entered the final construction phase, with a total length of 299.8 kilometers and a design speed of 350 km/h, aiming for completion within this year [2] - The Guangzhang High-Speed Railway, the longest in Guangdong, will connect seven cities and is expected to be completed this year, with a total length of approximately 401 kilometers and a design speed of 350 km/h [3] Group 3 - By the end of 2024, the total railway operating mileage in China is expected to reach 162,000 kilometers, with high-speed rail accounting for 48,000 kilometers [3] - The national railway group plans to produce new lines of 3113 kilometers this year, with high-speed rail expected to exceed last year's total of 2457 kilometers [4] - The addition of two provinces, Guizhou and Liaoning, achieving "city-to-city high-speed rail" status this year will increase the total to 12 provinces with such connectivity [5][6]

Group 1 - The Shenyang to Changbai Mountain High-Speed Railway (Shenbai High-Speed Railway) has completed its track laying, marking a significant milestone for its operational readiness [1][2] - The railway spans 430 kilometers with a design speed of 350 kilometers per hour, connecting seven cities in Liaoning Province and ending at Changbai Mountain Station [1][2] - The railway is expected to open in September 2023, reducing travel times from Shenyang and Beijing to Changbai Mountain to 1.5 hours and under 4 hours, respectively [2] Group 2 - The Shenbai High-Speed Railway is a crucial part of the national medium- and long-term railway network plan, enhancing connectivity in Northeast China [2][3] - With the completion of this railway, Liaoning Province will achieve its goal of having high-speed rail access to all cities, becoming the 11th province in China to do so [2][3] - The railway will significantly improve access to tourism in Northeast China, linking the Beijing-Tianjin-Hebei region with the region's winter tourism offerings [2][3] Group 3 - Shenyang is already a core node in Northeast China's high-speed rail network, with existing lines such as Harbin-Dalian, Beijing-Shenyang, and Shenyang-Danjiangkou [3] - The addition of the Shenbai High-Speed Railway will complete the eastward high-speed rail gap for Shenyang, forming a "米" shaped high-speed rail framework [3] - By 2025, the national railway operating mileage target is set at 165,000 kilometers, with high-speed rail expected to reach 50,000 kilometers [3]