Hu Jintao social, political and environmental problems. One of the biggest challenges Hu faced was the large wealth disparity between the Chinese rich and poor, for which discontent and anger mounted to a degree which wreaked havoc on the Communist Party's rule. Furthermore, the cronyism and corruption plaguing China's civil service, military, educational, judicial and medical systems sought to destroy the country bit by bit. In the beginning of 2006, however, Hu launched the "8 Honours and 8 Shames" movement in a bid to promote a more selfless and moral outlook amongst the population. At the 17th CPC National Congress, Hu was
35th G8 summit invited to attend the summit and to participate in some, but not all, G8 summit activities. The G8 plus the five largest emerging economies are known as G8+5, including: Brazilian President Luiz Inácio Lula da Silva, Chinese President Hu Jintao, Indian Prime Minister Manmohan Singh, Mexican President Felipe Calderón and South African President Jacob Zuma. Hu Jintao curtailed his participation following the eruption of ethnic rioting in Ürümqi. In his place, State Councilor Dai Bingguo led the Chinese delegation at the summit. Previous G8 summits have invited other world leaders to participate; and the Italian duty Presidency invited a number