Two panda bears on an extended loan from China were welcomed Wednesday to their new house in Copenhagen during a ceremony fit for Denmark’s queen.

Queen Margrethe inaugurated the Panda House built for Zoo Copenhagen’s new residents, who arrived last week in cargo containers under China’s popular “panda diplomacy” initiative.

The 160-million kroner (US$24.2 million) enclosure, designed by Danish architect Bjarke Ingels in the shape of a yin-yang symbol, is located in the heart of the zoo and features a panda-themed restaurant.

The 78-year-old queen untied a red velvet ribbon to officially welcome six-year-old male Xing Er, and Mao Sun, a five-year-old female, to their Danish accommodations. The public will be able to see the pandas for the first time on Thursday.

Queen Margrethe of Denmark cuts a ribbon to inaugurate an enclosure for two pandas recently arrived from China on Wednesday. Photo: AFP

“Congratulations to all of us. We now have two pandas in a fabulous enclosure that we can look at for many, many years,” Margrethe said.

They are to be separated and brought together again during the mating season. Xing Er replaced another male panda China originally picked to go to Denmark after it was discovered he could not procreate.

Chinese girl has close encounter with giant pandas after falling into their enclosure

China has lent out pandas as a sign of goodwill to fewer than two dozen nations. Any cubs born during the 15-year loan period are considered China’s.

The bears are “national treasures of China and symbol of peace,” the Chinese Ambassador to Denmark, Deng Ying, said on Wednesday.

A costumed protester holds a placard during a demonstration organised by the support committee for the Danish Society for Tibetan Culture and Students for a Free Tibet on Wednesday, April 10, 2019 outside Zoo Copenhagen. Photo: AFP

In February 2018, China loaned two pandas to Finland. Two others arrived in June 2017 at Berlin’s Tierpark zoo, where the first visitors were German Chancellor Angela Merkel and Chinese President Xi Jinping.

The best-known case of panda diplomacy was in 1972, when a arrived in the US, two months after President Richard Nixon’s trip to China, ending 25 years of isolation and tension between the two.