What counts as a problematic work tends, loosely, to be anything explicitly sexually suggestive, some nudes, those with religious subject matter and politically engaged works that might be construed as criticising the Chinese regime. A foreign exhibitor at one of the fairs says anonymously that they were not allowed to bring a work that joked about global trade and Chinese manufacturing. Works by Georg Baselitz and Francis Bacon, proposed by international galleries were apparently among those turned down this year.