content across several subdomains

Hi there, Need clue for wordpress integration content accros several subdomains. For example I have installed wordpress in Homepage http://www.example.com and i have install wordpress in my subdomain too http://www.category.example.com. So, may i post content in Homepage http://www.example.com can be automatically to post content and category in my subdomain http://www.category.example.com. Sorry my english poor. Need Help master. Thanks