I am traveling to Mongolia and have to make a stop in China both ways- do I still need a Chinese visa?

All the tickets I've seen to Mongolia from Korea, and back, would have me do a stopover in Beijing between flights. The stop over is quite long- a 12 to 14 hour wait- but I do not plan on leaving the Peking airport; I just need to wait in the airport until my connecting flight.
Does anyone know from experience- do I still need a visa, even though I am not exiting the airport and traveling around China?
All the tickets I've seen to Mongolia from Korea, and back, would have me do a stopover in Beijing between flights. The stop over is quite long- a 12 to 14 hour wait- but I do not plan on leaving the Peking airport; I just need to wait in the airport until my connecting flight.
Does anyone know from experience- do I still need a visa, even though I am not exiting the airport and traveling around China?

I went to www.travel.state.gov and the phrase that worries me is this one:

"Visas are required to transit China. Persons transiting China on the way to and from Mongolia or North Korea or who plan to re-enter from the Hong Kong or Macau Special Administrative Regions should be sure to obtain visas allowing multiple entries."

When they say transiting, I don't know if that includes my situation as well.
I'm buying my ticket online, so I can't call a travel agent, and when I tried calling the Chinese embassy I got an automatic message, so I just sent them an e-mail.

If you are not passing through customs you will not need a visa.

However I would check up on if you have to rebook your baggage onto the next flight in which case you may have to exit customs....

However transit visa rules can be found at...

you do not need a visa for a country you do not plan to travel within, since you will be waiting at the airport for a connecting flight to your destination you wont need a visa.

Call the Chinese Embassy and ask... that's the wisest and easiest way to deal with it.

as far as I know, if you staying in transit area only and not trying to enter the city, u dont need a visa. still it will be better if you contact the travel agent who sold you this ticket and recheck with them

If you only stay at the airport and it doesn't excceed 24 hours, you are visa free. If it is not the case, you have to apply for a Transit visa (Category: G).

Hope the 2nd flight is not late...