I don't know how to answer LZ ~ ~ I am also a member of the badminton association of a university in Changsha. We have a competition sponsored by a local badminton shop. For example, we will sponsor the sports equipment store in He Long. You can usually get some balls and prizes. However, it seems that every school has its own sponsors, and sponsors have always been relatively fixed. LZ can ask your former president, if not, go and find him. Usually you have to find your own way to pay for the venue, and it is unlikely to get sponsorship. Usually, you should collect some money from the contestants.