按照国务院联防联控协调机制防控政策要求，自即日起，购票、乘车及进出站停止查验48小时核酸证明和健康码，各项进京防控措施调整时间另行通知。

Starting from Wednesday, passengers buying train tickets, entering and leaving railway stations will no longer need to show a negative 48-hour COVID-19 test result and health code, according to the latest announcement by China State Railway Group.