From Asur, Yu, and Huberman:
In China, the trends are created almost entirely due to retweets of media content such as jokes, images and videos, whereas on Twitter, the trends tend to have more to do with current global events and news stories.
We observed that only 4 out of the top 20 influential authors were verified accounts. (…). The other 16 influential authors are unverified accounts. They all seem to have a strong focus on collecting user-contributed jokes, movie trivia, quizzes, stories and so on. When we further inspected these accounts, we discovered that these accounts seem to operate as discussion and sharing platforms. The users who follow these accounts tend to contribute jokes or stories. Once they are posted, other followers tend to retweet them frequently.
Asur, Sitaram and Yu, Louis and Huberman, Bernardo A., What Trends in Chinese Social Media (July 18, 2011). Available at SSRN: https://ssrn.com/abstract=1888779 or http://dx.doi.org/10.2139/ssrn.1888779