The primary objective of Gu Chaoyan's visit to the Supreme Sect was to obtain the One Origin Grass.
However…
The most immediate task at hand was to successfully pass the outer sect examination.
The first examination they were about to undertake belonged to the Array Faction.
Upon entering the array formation, they would determine their performance based on the duration of their stay within it.
Thus…
They could either remain within the area for a significant period of time or make a significant impact within the array formation.
Those who managed to endure a long duration within the array formation would, at the very least, prove their ability to survive.
Regarding array formations…
Gu Chaoyan harbored no fear. She possessed numerous books on array formations within her spatial storage, and she had extensively studied the subject. She believed she would be capable of handling the Supreme Sect's examination of disciples.