Three guests

The Institute had no shortage of places to conduct tests at, however other than things related to his time at the institute such as classes and the combat arena, Yang Qing was unfamiliar with areas unrelated to it such as areas set aside for the entrance examination, and for that, he needed the Vice Chancellor's help in addition to getting the necessary manpower and materials to set everything up. 

He was left close to 12 hours before the test began, so he needed as much help as he could and the best way for that was through Vice Chancellor Wu Ling.

With his support, Yang Qing was able to find a suitable location and was able to source manpower from different departments both from within and outside the Institute such as the beast taming department, formation department, alchemy, and the like.