Just google out that's Zhenla means Cambodia but where'e is Nanzhang??? That's not a place inside China?? Or that's mean Vietnam??
Still waiting to enjoy the plots Silver Hand'ld show against Great Xia and also waiting to see Great Xia merger that's 3 country (Korea, Nanzhang and Zenla) in and also half of Japan.
3 country declare war on great xia, not china!! so the one who will suffer from attack is only great xia.. di chen can just leisurely attack japan without thinking much about his country defense.. great!!