After getting Empress Heidi's validation, Master Magaera smiled and threw the letter at General Grunt's feet. There was no bad blood between Master Magaera and General Grunt, so he was looking to cause problems for him. However, Master Magaera was skeptical and no matter who it was, if he had identified a problem, he would point it out.

Finally, the Nine Heaven Emperor gathered his thoughts and frowned as he asked coldly, "General Grunt, what's going on? This paper belongs to the fiend race. Why did you say you used it for official matters in the Imperial Sky Palace?"

Immediately, General Grunt's face turned pale, a cold sweat broke out on his forehead, and he knelt. "Your Majesty, I was mistaken earlier. This letter was written by the spy I sent when he snuck into the fiend race camp. The situation was critical and the spy simply used a paper he found at the fiend race camp and wrote down the battle plan."

General Grunt was nervous. He had never thought a paper would become a clue.