Using the PDF[1] attached in bug 573377, I was able to confirm that Okular also needs poppler-data in order for Chinese characters to appear.
Just to note: Bug 616321 and bug 616322 are for making the packages for Evince and Okular depend on poppler-data, respectively.
[1]: https://bugs.launchpad.net/ubuntu/+source/evince/+bug/573377/+attachment/1365370/+files/LTN201004301014_C.pdf
Using the PDF[1] attached in bug 573377, I was able to confirm that Okular also needs poppler-data in order for Chinese characters to appear.
Just to note: Bug 616321 and bug 616322 are for making the packages for Evince and Okular depend on poppler-data, respectively.
[1]: https:/ /bugs.launchpad .net/ubuntu/ +source/ evince/ +bug/573377/ +attachment/ 1365370/ +files/ LTN201004301014 _C.pdf