```
Without Qi Tian needing to give a command, the five Princes had already exerted themselves to the utmost, letting loose their handiest and most powerful spells one after another, like money was no object, ceaselessly falling upon the door of the Inner Underground Palace. Unfortunately, the result was still the same: not a single change occurred, and the tomb door was entirely unaffected.
After a series of intense attacks, the Princes were greatly exhausted, having unleashed dozens of spell attacks each and were left panting for breath. Realizing they were indeed helpless against the door of the Inner Underground Palace, they dejectedly ceased their spells and hung their heads, waiting for Qi Tian to scold them.