Maintenance team scales heights to keep trains moving

A dedicated team of young maintenance workers is helping keep the lights shining on 671 kilometers of railway line in Yunnan province.

The 21 members of the team - average age just 24 - work at night as they check the thousands of bolts on light towers and bridges on two new lines.

Selected for the special duty in July from more than 1,500 repairmen at China Railway Corp's Kunming branch, they methodically check over 60,000 bolts over the course of three months before starting the process again.