NEW YORK, Sept 28 — It's no secret that Facebook CEO Mark Zuckerberg has made a concerted effort to be the perfect son-in-law — by learning Mandarin to better communicate with the family of his wife, Priscilla Chan.
纽约，9月28日- Facebook CEO马克·扎克伯格为了能增进和他妻子（普莉希拉·陈）家人的交流，一直努力学习汉语，希望能成为完美的中国女婿。这已是一个公开的秘密。
In fact, his mastery of the language has reached such a level of proficiency that he conversed with President Xi Jinping of China entirely in Mandarin during their meeting on Wednesday.
Zuckerberg later wrote on his Facebook wall, "Today, I met President Xi Jinping of China at the 8th annual US-China Internet Industry Forum in Seattle."
"On a personal note, 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 honour to meet President Xi and other leaders."
Slate reported yesterday that this isn't the first time that Zuckerberg has showed off his Mandarin language skills in public.
Last year, he conducted his entire 30-minute Q&A session at Tsinghua University in China in Mandarin.
Then, on Chinese New Year, he shared a video in which he speaks in Mandarin. However, one could also say that it is a savvy business move on Zuckerberg's part.
Although currently blocked in China, the 1.3-billion-strong market is one that Facebook will want to get into one day.