China has gained a major foothold in oil-rich Iraq, shaking up Western domination in fields from energy to construction, even as some warn infrastructure projects could leave Baghdad in debt. Two Chinese partners were tapped to carry out the construction -- PowerChina and Sinotech -- with 8,000 education facilities to eventually be built. Work has also begun on an airport in the southern city of Nasiriyah, built by the China State Construction Engineering Corporation.