Gui Bi thought too much; Lu Bei was not interested in her snow-white, clean body. He only agreed to have her stand guard at the door for the sake of Fox Er.
Although it's common for members of the Fox Family to constantly tease each other—he teased Fox Er and Fox San, Fox Er teased him and Fox San, and Fox San teased both of them only to get beaten up—since Fox Er was newly in charge, it was her time to be imposing. At this moment, her word was law, and Lu Bei would simply go along with whatever she said.
The main goal for tonight was to fight, the kind of heated, fist-to-flesh combat.
Gu Mi was a true man, with not a single trace of the word "coward" in her dictionary, even though she had seen with her own eyes Lu Bei defeating the will of the ancestor Monster Emperor. She was still full of fighting spirit.
To reward her courage, Lu Bei did not bring out the Array of Stars and slowed down his speed to give her a satisfying fight.
