119m Olympics-related 'Tweets' were made on Sina Weibo during the 2012 opening ceremony

"While much has been made about this being the 'Twitter Olympics,' it should be noted that China has its own version called Sina Weibo (meaning "microblog" in Chinese) that is making a strong case to call this the "Weibo Olympics" as well.
While Twitter counted almost 10 million tweets during the Olympic opening ceremony, which was more than during the whole of the Beijing games, Sina Weibo counted 119 million opening ceremony tweets. What makes these numbers even more impressive is that Twitter has half the users of Twitter, but generated over 10 times the number of comments, writes Sam Flemming, Shanghai-based president and founder of social business intelligence provider CIC."

Source:  AdAge, 8th August 2012