Egypt signed a memorandum of understanding with the China Railway Construction Corporation to construct Cairo's sixth metro line, according to a transportation ministry statement issued on Thursday.
Cairo's metro, planned to have a total of six metro lines, aims to reduce traffic congestion in one of the most populous cities in the world.
The project to construct the sixth metro line will cost $3.5 billion, the financing of which remains under negotiation between the two parties, according to the statement.
The line stretches over 24 kilometres parallel to the first line from Al-Khosos north of Cairo until the southern suburb of Maadi in the satellite zone.
Egypt is still constructing the third metro line, which is planned to be completed by 2020. Construction on the fourth and fifth lines has not begun yet.