If there was indeed something fishy about Liu Junshan's inspection this time, it wouldn't be apparent from the start, and rushing to follow him might scare the snake in the grass.
...
...
After inspecting four towns, just as Liu Junshan was about to head to the fifth town, he suddenly heard the murmurs of commoners by the road.
"What inspection? It's merely a formality."
"Exactly. I think the commander is obviously distracted. And here I thought Commander Liu was truly coming down to champion our cause as commoners. It's a good thing I didn't complain about Arrest Officer Xue."
"Officials covering for each other, they're all cut from the same cloth."
These words from the commoners snapped Liu Junshan into realization; he'd been too eager to see Chu Ning and had lost his sense of proportion.
If people from the Wushuang Sect were tracking him, they would certainly detect his flaws.
If he went to see Chu Ning, he might inadvertently expose him.