Yang Qiuyu, Zhou Lubao, and Qin Huo Huo are three "Big V's" that were arrested between 21 and 23 August 2013 on charges of rumormongering and slander. In that same month, Chinese-American investor Charles Xue (Xue Manzi), one of the most popular liberal social commentators on Chinese social media, was also arrested. Three weeks after his arrest, he appeared on CCTV-1 (a Chinese TV channel), confessing that he "irresponsibly posted rumors about political and social issues online," and commending the new internet regulations passed under General Secretary Xi Jinping's administration. These arrests served as an example to the rest of the "Big V's" as well as other Chinese internet users to be careful of what they expressed online; in fact, even five months after these arrests in August, there was a noticeable decrease in the number of posts and discussions from prominent online figures. On popular microblogging site Weibo, opinion leaders decreased their posts by around 40% from the previous year. By 2015, instances of censored posts from popular Weibo accounts included messages that were only mildly critical of the government – for example, the blocking of sarcastic comments in the wake of a widely viewed documentary about urban air pollution in China entitled, "Under the Dome" ().