Core Points - The Xizhao Expressway's Luogu Tunnel, constructed by China Railway 10th Bureau, has been fully completed as of August 21, with the left line measuring 6,570 meters and the right line measuring 6,661 meters [5][2] - The Xizhao Expressway runs from Xichang City in Sichuan Province to Zhaotong City in Yunnan Province, serving as a crucial segment of the national expressway network connecting Duyun to Shangri-La [5][2] - This expressway is a key economic artery for the Liangshan Yi Autonomous Prefecture in Sichuan, facilitating external connectivity [5][2]