Australia revoked the visas of two Chinese academics studying China: Chen Hong from East China Normal University and Li Jianjun from Beijing Foreign Studies University. Their visas were cancelled on security grounds. Shortly after, China banned Clive Hamilton and Alex Joske from entering China, labelling them “anti-China scholars”.

Further reading:
    1. No one wins in a race to the bottom on national security: Let the Chinese academics back in
    2. In Australia and China, Government Action Hammers Human Ties