Most of the leaders of the great powers in the world right now have Twitter accounts that have been profiled on this site. China and Germany are the most important exceptions to this.
Chancellor Angela Merkel does not have a public Twitter account, though there is an account that follows her movements and policies, which is not run by her office and is not verified. It is possible she has a private account, but it seems unlikely based on her extremely slow adoption of social media platforms- it was only this year when she joined Instagram and began to use YouTube to ‘woo’ voters. She does however monitor President Trump’s prodigious Twitter feed.
Twitter is banned in China, which explains President Xi’s lack of an account. Despite this, Donald Trump made headlines recently by managing to maintain his rigorous tweeting schedule during a state visit to China.
When President Xi posted for the first time on Weibo, a Chinese social media platform, in 2015, almost 50,000 people commented on the post. Were he to engage more with social media, it is likely that he would follow the example of many of the other heads of state on Twitter, whose success speaks to the efficacy of their messaging and account management.
Until that happens, sporadic updates about him can be found on the Twitter account devoted exclusively to President Xi’s pants.