Most of the four major organizations and societies in universities have external liaison departments, but these departments basically only want you to sponsor their activities and let you sign up. If you want to make a presentation, you should contact the employment guidance center of the school. The employment guidance center is responsible for students' entrepreneurship and is a platform to connect students with enterprises. The average cost is about 1 000 yuan, because the venues are different in size, including small classrooms, large classrooms and conference lecture halls.