I had no idea China had that many troops in Sudan does China has fighters operating too?
http://www.tribune.com.ng/19122007/Midweek.html
Link to storyQuote (on page 4 or near the end)
China has also deployed about 4,000 PLA troops to southern Sudan to guard an oil pipeline and recently reaffirmed its intention to strengthen military collaboration and exchanges with Ethiopia, Liberia, Nigeria, and Sudan.
http://www.tribune.com.ng/19122007/Midweek.html