7月1日起，调图！

Core Viewpoint - The article discusses the upcoming changes in China's railway operation schedule, highlighting the introduction of new high-speed sleeper trains connecting major national city clusters, which aims to enhance passenger and freight transport capacity, service quality, and operational efficiency [1][2]. Group 1: New Train Operations - Starting from July 1, a new train operation schedule will be implemented, with ticket sales beginning on June 17 [1]. - The new schedule will introduce high-speed sleeper trains between Beijing and Chengdu, Beijing and Guiyang, Shanghai and Chengdu, Shanghai and Yibin, and Taiyuan and Shenzhen, with two trains on each route [1]. - A total of 13,302 passenger trains will be scheduled, an increase of 236 trains compared to the current schedule [1]. Group 2: Freight and Passenger Capacity - The number of scheduled freight trains will increase to 23,635, up by 39 trains from the current schedule, improving overall transport capacity [1]. - The introduction of benchmark trains on key high-speed rail lines will enhance connectivity and economic exchanges in the regions [1]. Group 3: Regional Economic Development - The opening of the Chongqing East to Qianjiang section of the Yuxia high-speed railway will facilitate 18 train services, with additional services connecting Chengdu and Chongqing to cities like Changsha and Nanchang [2]. - Travel times from Chongqing and Chengdu to Changsha will be reduced by 1 hour and 18 minutes and 50 minutes, respectively, supporting the development of the Chengdu-Chongqing economic circle and the Yangtze River economic belt [2]. Group 4: Service Optimization - The railway department will optimize high-speed passenger services by adding trains and increasing stops on certain routes to enhance network accessibility [2]. - New "G" class trains will operate between Yinchuan and Chongqing, taking 9 hours and 22 minutes for the journey, while four regular trains from Shanghai to Nanning will be upgraded to "D" class trains, reducing travel time to 18 hours and 43 minutes [2].