BEIJING — British garden parties are not known as occasions for blunt talk, especially if they take place at Buckingham Palace.

But on Tuesday, Queen Elizabeth II, clad in bright pink, had a frank exchange about China on her palace lawn with a Metropolitan Police commander, Lucy D’Orsi. They spoke of conflicts that unfolded in London in October when President Xi Jinping of China and his entourage made a state visit to Britain, and at one point, the queen referred to the visiting officials as “very rude.”

A transcript of that exchange is below.

First, before hundreds of onlookers, the queen, 90, was introduced to Ms. D’Orsi by the Lord Chamberlain, Earl Peel, who serves as head of the royal household.

Ms. D’Orsi spoke of an episode in which Chinese officials stormed out of a meeting with her and Barbara Woodward, a longtime diplomat and the British ambassador to China. She called it “a testing time.” The queen commented, “They were very rude to the ambassador.”