In case you missed it, here's Facebook CEO Mark Zuckerberg speaking Mandarin Chinese at Beijing's Tsinghua University.
Zuckerberg surprised the audience by speaking and answering questions in Mandarin for almost 30-minutes.
His heavy accent caused a few moments of misunderstanding - like when he tried to say the word "billion" but it came out as "eleven."
But no matter. It was an inspiring effort!
Catch News Stream with Kristie Lu Stout weekdays at 8pm HKT/ 12pm GMT / 8am ET on CNN International.