hi i'm from the uk. on holiday for 3 months in austria. have been invited to do a paragliding show

hi i'm from the uk. on holiday for 3 months in austria. have been invited to do a paragliding show in china for 6 days.. i won't return to england before i leave to china a couple off days be4. what do i need to bring or send to you for the visa as i'd like to get this all sorted be for i fly to china from london..... what visa do i need and what do you need from me and can i send you my passport by post...