How to fill family information in native language?

[passmethosefries]

On the family information form (imm5645) they ask for names in both english and native language. My parents names are both in chinese in their passports. They have the pinyin version (normal characters), but how do I fill with native language if it just shows blank boxes when typing? Should I print, fill and scan? Can I add a word sheet with their names? Should I just leave it out? Any help would be appreciated.