Chinese President Xi Jinping offered another $60 billion in financing for Africa on Monday and wrote off some debt for poorer African nations while warning against funds going toward “vanity projects”. Speaking at the opening of a major summit with African leaders, Xi promised development that people on the continent could see and touch, but that would also be green and sustainable.

China has denied engaging in “debt trap” diplomacy, and Xi’s offer of more money comes after a pledge of another $60 billion at the previous summit in South Africa three years ago. Chinese companies will be encouraged to invest no less than $10 billion in the continent in the next three years, he said. Government debt from China’s interest-free loans due by the end of 2018 will be written off for indebted poor African countries, as well as for developing nations in the continent’s interior and small island nations, Xi said.

China will carry out 50 projects on green development and environmental protection in Africa, focusing on fighting climate change, desertification and wildlife protection, Xi said. He pledged, without giving details, that China would set up a peace and security fund and a related forum while continuing to provide free military assistance to the African Union.