I want like to know all requirements and documents i need for business visa as i have original invitation letter

Dear Sir, I want like to know all requirements and documents i need for business visa as i have original invitation letter, secondly i need the visa same day as only 3 days left to go to china as i have confirmed the ticket and does we need ticket to submitt in embassy for visa and hotel booking? Last urgent fee we will pay cash or what? Please reply soon i have less time as i am already late due to embassy closed for national holidays. I willl be thankful to you.