Chinese President Hu Jintao has signed a number of agreements with Liberia in Monrovia, pledging more aid and investment to the West African nation.
The deals included the cancellation of $10m (£5m) of Liberia's debt to China and waiving duties on Liberian exports.
Mr Hu also promised to help Liberia - which is still recovering from a long civil war - tackle malaria and assist in education and agriculture.
The president, who is on a African tour, is visiting Sudan on Friday.
Mr Hu and his Liberian counterpart, Ellen Johnson-Sirleaf, signed a memorandum of understanding during their talks in Monrovia.
It included the formal signing away of $10m debt owed to Beijing.
"Also China has decided to give to Liberia within two years... $25m (£13m)," Liberian Information Minister Lawrence Bropleh said.
The money will be spent on projects to help rebuilt Liberia, following the 1989-2003 civil war that ravaged the country.
On his part, President Hu was seeking to help his country access Liberia's raw materials, including iron ore, for the rapidly-expanding Chinese economy.
Mr Hu arrived in Liberia from Cameroon, where he had signed grants and loans worth around $100m.
From Liberia, Mr Hu heads for Sudan - a source of oil for China.
This is the most controversial of his eight-leg African tour, as the Sudanese government is accused of committing human-rights abuses in Darfur, the BBC's Will Ross in Monrovia says.
Beijing has so far backed the Sudanese refusal to accept UN peacekeepers in Darfur, our correspondent says.
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