Bai Chen wasn't very smart, but he was able to quickly connect the dots.
Ever since Zhu Ge had been his servant in his palace, the man would occasionally return to his house to retrieve his belongings, and the man could casually return to the palace with a refreshed face instead of showing any signs of fatigue.
Just like Dong Lang, Wu Li's territory was vast, and that was why Bai Chen would sometimes feel worried when Zhu Ge had to commute from his house to the palace. He thought that Zhu Ge lived far away from his palace, and sometimes he felt bad about it even if he wouldn't want to admit that.
But Zhu Ge had just confirmed that his house was close to his palace, and he was suddenly relieved to know that the man in red didn't have to walk a thousand miles just to reach his house when he needed something to pick up.