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Prior to the summit, the Africa tour took Xi and his wife Peng Liyuan to Zimbabwe's capital Harare and South Africa's executive capital Pretoria to pay state visits.

"On issues like cyber security and maritime issues, I think President Xi and I have developed a candid way of discussing these issues," said Obama, adding that teams from both countries have found ways to work through these tensions in a constructive fashion.

On November 23, "Earth Crisis", a huge ball, eight meters in diameter, weighing 2.3 tons and with a surface area of 200 square meters, was suspended 60 meters above the ground floor of the Eiffel Tower.

"These include investments in transport infrastructure development and capacity building. This has enhanced Africa's capability in moving goods and services. This level of support has existed for decades and is not a new trend as some may have us believe," he said.

Meanwhile, to ensure a smooth implementation of the initiatives, Xi pledged to provide 60 billion U.S. dollars in financial assistance to Africa, including 10 billion dollars for a China-Africa production capacity cooperation fund.