Mark Zuckerberg is a man of many accomplishments. A computer programming whiz who famously co-founded "The Facebook" in his Harvard University dorm. An entrepreneur. A philanthropist. A person who warranted a wax sculpture. And now, he's a conversant Mandarin Chinese speaker.

As he explained in a question-and-answer session conducted entirely in Mandarin, so many of his Chinese-American wife's family members speak only Mandarin that he decided to learn. He has studied it since 2010 and this week felt confident enough in his skills to take questions in Mandarin Chinese at a forum at a Beijing university often called "the MIT of China," Tsinghua University.

The audience gasped and broke into applause when Zuckerberg took the microphone and greeted them in Mandarin, saying 大家好 "Da jia hao!" (Hello, everyone.)

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Zuckerberg went on to explain — in Mandarin — that his wife's grandma loved it when he was able to ask in Chinese for her blessing to marry his wife, Priscilla Chan. And that he loves a challenge. Mandarin is a good one — it is considered one of the most difficult languages for an English speaker to learn.

And we should mention that while Zuckerberg is impressive in his ability to answer questions and speak in full sentences, he is actually not a good Chinese speaker. That's because the language is tonal. For example, "ma" could mean horse, hemp, mom or scold, depending on which tone you use. Zuckerberg's tones are all off, but since he can speak in sentences, the context made him intelligible.

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