US President-elect Donald Trump has posted a series of tweets criticising China for its monetary policy and its operations in the South China Sea, the BBC reported Monday.

"Did China ask us if it was OK to devalue their currency" and "build a massive military complex?" he asked. "I don't think so!"

Last week Mr Trump risked a diplomatic rift with China by speaking directly with Taiwan's president.

The highly unusual move saw China lodge a complaint with the US.

Source: MENA