"A select few countries should not have privileges based on self-interest, and the world cannot revert to the law of the jungle where the strong prey on the weak," He said in a speech which came as US President Donald Trump pushes his increasingly assertive America First agenda, and demands NATO ally Denmark to cede Greenland to him.

"All countries have the right to protect their legitimate interests," He added.

In a veiled reference to Trump's mercurial trade policies, He slammed the "unilateral" actions and trade agreements of "some countries" which he said violates the rules of the World Trade Organization.

Beijing and Washington last year were locked in a blistering trade war that saw both countries impose tit-for-tat tariffs on each others' products.

"The current multilateral trading system is facing unprecedented and severe challenges," He said.

"We must firmly uphold multilateralism and promote the improvement of a more just and equitable international economic and trade order."