Group 1 - The construction of the Zizhong to Tongliang expressway, with a total investment of 20.2 billion, is accelerating and will connect the Chengdu-Chongqing region, creating a "one-hour friend circle" [2] - Since the opening of the first expressway in Sichuan in 1995, a total of 16 expressways have been built between Sichuan and Chongqing, with the total mileage exceeding 2300 kilometers, including the upcoming Zizhong to Tongliang expressway [2][3] Group 2 - The Chengyu expressway, opened in 1995, has an average daily traffic of over 100,000 vehicles [3] - The Dazhou to Kaizhou expressway is a key project for the Chengdu-Chongqing economic circle, reducing travel time from 2 hours to 40 minutes [3] - The Luzhou to Yongchuan expressway has improved water-land transport efficiency by 40% [4]