China, the world's second-largest economy, is Africa's biggest trading partner and is trying to exploit the continent's vast natural resources, including copper, gold, lithium and rare earth minerals.
It has also provided billions in loans to African countries that have helped build much-needed infrastructure. However, they have sometimes caused controversy by saddling governments with huge debts.
Twenty-five African leaders have arrived in Beijing or confirmed they will attend this week's China-Africa forum, including some whose countries face a growing risk of debt distress.
Xi and his wife Peng Liyuen welcomed the guests, who arrived to a lavish dinner in the Great Hall of the People on the evening of September 4.
A "family" photo was also taken of the assembled leaders. Xi is expected to deliver a speech at the opening ceremony on the morning of September 5.
Chinese state media praised Xi this week as a "true friend of Africa," claiming China's ties are reaching new heights under his rule.
The Chinese leader has already held talks with more than a dozen African counterparts in Beijing.
Xi called during a meeting with Nigerian President Bola Ahmed Tinubu for major cooperation in "infrastructure, energy and mineral resources development," state media Xinhua reported. The African country is one of China's biggest borrowers on the continent.
He also pledged cooperation in investment, trade, infrastructure and mineral resources, among other areas during talks on the same day with Zimbabwean President Emmerson Mnangagwa.
Xi backed Zimbabwe in its fight against "illegal sanctions" imposed by the US in response to corruption and human rights abuses by the country's leadership. | BGNES