You must transform the encoding of HomePane_zh.properties file with native2ascii JDK tool.
Rename it HomePane_zh.utf8.properties and then execute the following command :
native2ascii -encoding UTF-8 HomePane_zh.utf8.properties HomePane_zh.properties

To transform it the other way add the -reverse flag :
native2ascii -encoding UTF-8 -reverse HomePane_zh.properties HomePane_zh.utf8.properties