"We shall be firm in opposing all forms of hegemony and power politics, as well as all forms of unilateralism and protectionism," he told an audience of more than 200 people, including UN Secretary-General Antonio Guterres, who attended via video link, ambassadors to China and Chinese diplomats who have worked in the global body.

In 1971, the UN General Assembly adopted, by an overwhelming majority, a resolution to restore all rights of the People's Republic of China in the UN.

The president hailed the move as a momentous event for the world and the UN, saying that its importance was significant and far-reaching for both China and the world.