Group 1 - The D966 train, the first overnight sleeper train from Chengdu to Beijing, commenced operation on July 2, departing at 19:28 and arriving at 6:47 the next day, covering a total travel time of 11 hours and 19 minutes [9] - The train consists of 16 carriages, including 1 premium sleeper, 12 sleeper carriages, 2 second-class seats, and 1 dining car, with a total capacity of 618 passengers [11] - Ticket prices for the D966 train vary, with sleeper upper berths priced at 840 yuan, lower berths at 950 yuan, premium upper berths at 1680 yuan, lower berths at 1890 yuan, and second-class seats at 598 yuan [12] Group 2 - The train features a unique design with Sichuan cultural elements, including panda-themed amenities and a themed photo wall to enhance the travel experience [11] - The service includes a "quiet service" during nighttime, where staff use low-volume communication methods to ensure passenger comfort [14] - A variety of Sichuan snacks, such as cold rabbit and cold beef, are available for passengers during the journey, enhancing the culinary experience onboard [14] Group 3 - The new train schedule introduced on July 1 includes additional overnight sleeper trains from Chengdu to both Beijing and Shanghai, significantly reducing travel times [15] - The fastest travel time from Chengdu to Changsha has been reduced to 5 hours and 45 minutes, while the travel time to Shanghai has been shortened to 10 hours and 6 minutes [15] - The opening of a direct flight route from Panzhihua to Beijing has also been established, further improving connectivity and convenience for travelers [16]