Beijing, May 10 -- In the stately Conference Building at the United Nations Headquarters in New York City, a 65-inch-tall resplendent bronze vessel gleams under soft light, its cloisonne enamel blazing in vibrant Chinese red.

The "Zun of Peace," presented by Chinese President Xi Jinping in September 2015 as a special gift for the United Nations' 70th anniversary, is not merely a delicate artifact. It embodies the aspiration and conviction of the Chinese people to seek peace, development, cooperation and win-win outcomes, Xi said at its unveiling.

A decade later, as the top Chinese leader travels to Moscow to celebrate the 80th anniversary of victory in the Great Patriotic War, his presence both carries the weight of history and reaffirm...