Du You merely responded and did not stop. Obviously, the people who thought along the same lines as Du You were also present, all of them being fourth tier. Xi Qianxue and Li Mengyao were both third tier, and it was unclear why they wanted to come and search for materials.
In such a situation, it was impossible for the academy to let the two of them take away everything. Therefore, Du You guessed that before reaching the fourth tier, there must be some way to determine what the appropriate advancement materials were for oneself. This method might not be clear and could vary, but it existed nevertheless.
The trio quickly arrived near the fallen Giants. Du You flew around once and shook his head because he did not sense anything useful for himself. It seemed his luck was not very good.