Security Guard Patrols On Beijing Subway Train

BEIJING, CHINA - NOVEMBER 11: A security guard stands inside a subway train during a routine patrol as passengers sit and use their mobile phones on November 11, 2025, in Beijing, China. The capital's metro network, one of the busiest in the world, deploys on-board security personnel to maintain order and ensure passenger safety during daily operations. (Photo by Cheng Xin/Getty Images)