hi, i am a pakistani national hold a pakistani passport and live in the uk and have been given leave to remain in th uk fo an indefinite period , and i want to trave l to china as a tourist , i have tried to contact visa office in uk and they say you will not get a visa and should apply in pakistan china emabassy, can some one give me the address in islamabad for the embassy and what i require i have a valid passport , and can u give me link for applictions form, and do i need a invitaion from someone in china as to where i will be staying and are there any fees involved , so what i require help on is;

1; china embassy in pakistan address
2; application form link
3, what document do i need

this will be my first time traveling to china, and once i get the visa can travel from uk to china mainland jazakallah