2. Three of former US president Barack Obama's tweets were among Twitter's list of 10 most retweeted this year, while none of current US President Donald Trump's tweets made the list.
3. China's booming cyberstar economy has gone through three stages -- the first based on text, then text and images, and now video thanks to the availability of broadband networks.
6. The government-sponsored students have signed an agreement that says they are required to reimburse the government if they do not return home after completing their studies, said Xiong Binqi, vice president of 21st Century Education Research Institute.