In late July, Beijing hosted the 5th Forum on China-Africa Cooperation, during which China pledged up to $20 billion to African countries over the next three years. China has proposed or committed about $101 billion to commercial projects in Africa since 2010, some of which are under negotiation while others are currently under way. Together, construction and natural resource deals total approximately $90 billion, or about 90 percent of Chinese commercial activity in Africa since 2010. These figures could be even higher because of an additional $7.5 billion in unspecified commitments to South Africa and Zambia, likely intended for mining projects. Of the remaining $3 billion in Chinese commercial commitments to Africa, about $2.1 billion will be used on local manufacturing projects. While China has proposed $750 million for agriculture and general development aid and about $50 million to support small- and medium-sized business development in addition to the aforementioned projects, it has been criticized for the extractive nature of its relationship with many African countries, as well as the poor quality of some of its construction work. However, since many African countries lack the indigenous engineering capability to construct these large-scale projects or the capital to undertake them, African governments with limited resources welcome Chinese investments enthusiastically. These foreign investment projects are also a boon for Beijing, since China needs African resources to sustain its domestic economy, and the projects in Africa provide a destination for excess Chinese labor.