Most of the imprisoned Chinese reporters are of Uyghur origin.
Independent Chinese and foreign reporters and those active in Hong Kong are targeted.
The tensions between Beijing and Washington has also created problems for foreign journalists.
In September, two Australian journalists – Bill Birtles of the ABC and Michael Smith of the Australian Financial Review – fled China.
Apple Daily owner – and democratic activist – Jimmy Lai could end up with life imprisonment under the new security law set up by Beijing.