Passengers squeeze themselves into a congested subway train in Beijing, Dec 26, 2014. Two subways lines broke down on Friday morning, making the rush hour traffic even worse by forcing tens of thousands of commuters to wait for resumption of services or flock to nearby bus stops. [Photo/people.com.cn]

Two subways lines broke down in Beijing on Friday morning, making the rush hour traffic even worse by forcing tens of thousands of commuters to either wait for services to resume or flock to nearby bus stops.

Millions of commuters count on the capital city's metro, currently priced at 2 yuan no matter of mileage, making it one of the busiest and so far cheapest transport systems in the world.

Part of the No. 10 Line conked out at 6:00 am and lasted for more than two hours, causing suspension of some sections, return of trains, and temporary closure of transfers.

To add more misery to passengers rushing to work, massive delays also paralyzed the No 5 Line.

The underground traffic went back to normal at 9:00 am.