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“As a liberal, I no longer feel I have a future in China,” a prominent Chinese think tank head in the process of moving abroad recently lamented in private. Such refrains are all too familiar these days as educated Chinese professionals express growing alarm over their country’s future. Indeed, not since the 1970s when Mao still reigned and the Cultural Revolution still raged has the Chinese leadership been so possessed by Maoist nostalgia and Leninist-style leadership.
Crackdown in China: Worse and Worse by Orville Schell, New York Review of Books, April 21, 2016

I don’t understand why you’re surprised that Medium is being blocked by The Great Firewall. I believe that the New York Times is blocked as well.

Only by censoring Medium to Chinese standards could Medium avoid being blocked.

Just posting the paragraph above could be enough to get Medium blocked. I recommend reading the New York Review article referenced above. The author, Orvelle Schell is a China scholar with decades of experience.