Core Points - The Guangzhou-Shenzhen Railway (GSR) I and II lines have completed quality improvement projects, allowing trains to operate at a maximum speed of 200 km/h starting from November 5 [1][3]. Group 1: Infrastructure Improvements - The GSR I and II lines have undergone comprehensive upgrades, including track, bridge, traction power supply, and communication signal systems, enhancing the overall safety and operational efficiency [3][4]. - The average interval for train departures has been reduced to 13 minutes, with peak times seeing departures as frequent as every 5 minutes [4]. Group 2: Increased Capacity and Service - The number of daily train services has increased to 178, which is 27 more than before the upgrades, improving the transportation capacity between Guangzhou and Shenzhen [3][4]. - The number of train services between Guangzhou East and Futian stations has increased to 36, an addition of 8 services post-upgrade [4]. Group 3: Ticket Pricing and Market Strategy - The railway will continue to implement a market-oriented pricing mechanism, offering different discount rates based on passenger flow, with the lowest fare set at 75% of the published price [5].