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Both sides agreed the central banks of the two countries would promote local currency settlement to facilitate bilateral trade and investment, it said.

The Chinese premier, visiting Africa for the first time since taking office in March last year, listed four principles, outlined six areas and highlighted one platform for the Asian giant and the promising continent to realize the upgrading.

Shortly afterwards, near the border between Malaysian and Vietnamese air traffic control, the aircraft's transponder, which communicates with civilian air traffic controllers, was switched off.

He noted that over the years, China's investment and financial aid have helped Angola build over 130 infrastructure projects and have supported Angola's post-war reconstruction and economic development.

Some U.S. officials have voiced criticism against China's establishment of an Air Defense Identification Zone in East China Sea late last year.