The other party is a Fourth-Turn Immortal, and they are only Third-Turn Immortals. It was precisely because he feared his spirit sense would be detected that he did not use it to tail the target, opting instead to observe with the naked eye.
And the naked eye cannot see the actual scene inside the reception hall.
"I have my own methods. I can only say the principal is dead. Does that mean the mission is over?"
Chapter 658