Core Viewpoint - The Z99/100 express train, which has been in operation for nearly 29 years between Shanghai and Guangzhou, will be retired and upgraded to a high-speed train service starting January 26, 2023 [1][3]. Group 1: Train Operation and Transition - The last Z99 train departed from Shanghai Railway Station on January 12, 2023, marking the end of an era for this iconic service [1][3]. - The Z99/100 train has been a significant mode of transportation, connecting Shanghai and Guangzhou, and will be replaced by a new high-speed train service [3][4]. Group 2: Historical Significance - The Z99/100 train has served as a symbol of connection and integration, reflecting the development of China's railway network over the past three decades [4][6]. - It has been a cherished experience for many travelers, offering memorable dining options such as braised perch and sweet and sour pork, which have become part of the travel experience [4][6]. Group 3: Passenger Experience - The train has been known for its warm service and quality dining, creating a sense of nostalgia and community among passengers [4][6]. - The commitment to providing a safe and warm travel experience will continue with the new high-speed service, ensuring that the essence of passenger care remains unchanged [6].