Cambodian Primie Minister Hun Sen (L) delivers a speech during the inauguration ceremony of a road construction project in western Kampong Speu province, Cambodia, May 6, 2013. Cambodian Prime Minister Hun Sen on Monday broke ground for the construction of a 140-kilometer stretch of the national road No. 44 under Chinese financial support. (Xinhua/Li Hong)

Chinese ambassador to Combodia Pan Guangxue (R) delivers a speech during the inauguration ceremony of a road construction project in western Kampong Speu province, Cambodia, May 6, 2013. Cambodian Prime Minister Hun Sen on Monday broke ground for the construction of a 140-kilometer stretch of the national road No. 44 under Chinese financial support. (Xinhua/Li Hong)

Cambodian Primie Minister Hun Sen drives a bulldozer during the inauguration ceremony of a road construction project in western Kampong Speu province, Cambodia, May 6, 2013. Cambodian Prime Minister Hun Sen on Monday broke ground for the construction of a 140-kilometer stretch of the national road No. 44 under Chinese financial support. (Xinhua/Li Hong)