'Liberal Peking University Professor Threatened with Expulsion'

On tenure:

Liberal Peking University professor threatened with expulsion, South China Morning Post: A renowned professor has confirmed online rumors that his peers will decide whether he will be expelled from China's most eminent university after he made a series of remarks in favor of free speech and constitutional governance. Economics professor Xia Yeliang of Peking University was told by his department that his fate would be decided by a faculty vote, he told the South China Morning Post on Monday. "They told me it's because of all the things I have said and written," Xia said. "They have threatened me before, but this is the first time they will vote on my expulsion."

Over the last years, Xia has been one of the most outspoken liberal voices among Chinese academics. A friend of imprisoned Nobel Peace Prize laureate Liu Xiaobo, he was among the first signatories of Charter 08, the call for personal freedoms that landed Liu in jail. ...

I wanted to link to his Twitter account, but I couldn't find it:

... Recently, he has been writing critical remarks - on Twitter and Sina Weibo - about party censorship and President Xi Jinping's "Chinese Dream" slogan. 

Several, at least seven he said, of his Sina Weibo accounts have been deleted...