Hi I am Ousa. I plan to go to Bejing this november on 3rd to 8th for my company gathering party.

Hi, Ousa. You can apply for a Tourist Visa for your trip. Here are the documents that you should have:
passport and copy of its data page, round trip air tickets, accommodation arrangement, travel itinerary, proof of financial support, a fully completed application form, and a recently-taken passport-style photo.

As I know, you can get the result within 4 working days after submitting the application Usually.