state banquet, 國宴

President Xi meetsthe Queen at the state banquet at Buckingham Palace Getty Images
China state visit: Xi Jinping to sign Hinkley nuclear power plant deal in UK | Business News | News | The Independent
http://www.independent.co.uk/news/business/news/china-state-visit-xi-jinping-to-sign-hinkley-nuclear-power-plant-deal-in-uk-a6702116.html

The Latest: China' Xi Attends London Banquet in His Honor - ABC News
http://abcnews.go.com/International/wireStory/latest-chinese-leader-expected-confirm-reactor-deal-34618688

Chinese President Xi Jinping raises a glass with the Duchess of Cambridge during the State Banquet hosted by Queen Elizabeth II at Buckingham Palace in London
Xi Jinping China state visit: Chinese media describes UK public as 'potato lovers who can't drink tea properly' | Home News | News | The Independent
http://www.independent.co.uk/news/uk/home-news/china-state-visit-how-chinese-media-is-reporting-the-visit-and-calling-british-people-potato-lovers-a6703786.html

The Duchess of Cambridge, Chinese President Xi Jinping and Britain's Queen Elizabeth II attend a state banquet in the Ballroom at Buckingham Palace, London, on the first day of the state visit to the Britain, Tuesday Oct. 20, 2015. (Dominic Lipinski/Pool Photo via AP)
Xi inks nuclear power deal as UK seeks Chinese investment | www.wsbtv.com
http://www.wsbtv.com/news/ap/top-news/xi-to-ink-nuclear-power-deal-as-uk-seeks-chinese-i/nn6x8/

Reuters / Tuesday, October 20, 2015
A general view of the ballroom at Buckingham Palace, London, during a state banquet, October 20, 2015. REUTERS/Dominic Lipinski/Pool
Xi Jinping in Britain | Reuters.com
http://www.reuters.com/news/picture/xi-jinping-in-britain?articleId=USRTS59TW

State dinner - Wikipedia, the free encyclopedia