Invitation letter issue, help me!

Hi sir and maam
Im grace from phillipines i want to go to china to meet my italian boyfriend there and also to visit some places there he stay there because he have a job. For going there i need also his invitation, he dont know how to make an invitation. if he will do that to his own ar he need a lawyer or also he need to go to the embassy. I really need you advice please can you help me?

Thanks so much..