Czech guy want to visit China from New Zealand

Hi there,
I would like to visit China for few days on my way back to Czech republic from New Zealand. Now I am in Christchurch, and guy at China embassy told me that i need to deal with embassy in Wellington becouse i dont have NZ passport. So, can I send my application with copied passport and all this stuff what i need for get a visa to Wellingtom by post?? Or do i need be there personaly?? thanks for respond..cheers

LM:sry for my fluent english :)