Xi greets Boeing's Ray Conner. [Photo/China Daily]

At Microsoft

Xi shook hands and spoke in Mandarin with Facebook founder Mark Zuckerberg, who stood first in a line of 28 CEOs of top Internet companies waiting to have quick chats and photos with the Chinese leader. Xi then addressed the eighth annual US-China Internet Industry Forum held at Microsoft's Redmond campus in Seattle on Wednesday.

Zuckerberg said later on his personal Facebook page: "This was the first time I've ever spoken with a world leader entirely in a foreign language. I consider that a meaningful personal milestone. It was an honor to meet President Xi and other leaders."

Standing in line behind Zuckerberg to greet Xi were Apple's Tim Cook and IBM's Ginni Rometty.

After the forum, Xi and Peng toured Microsoft's executive briefing center and experienced Hololens, the company's developing holographic headset.

Microsoft's Harry Shum shows Xi a holographic device. [Photo/China Daily]