That afternoon, after finishing lunch, Huang Donglai and Sun Yixie roamed randomly around Xuzhou City, seemingly without doing anything official.
By 5 p.m. to 7 p.m., the two returned to the inn, just like the evening before, and each stayed in his room for quite some time, probably to freshen up; an hour later, when night fell, they came out dressed brightly, ready to head to the brothel.
The spy dispatched by Lord Shu to monitor them had been following them since they left the inn but could not detect anything unusual, or rather... the absence of anomalies was itself an anomaly.
What exactly had the spies missed?
They had overlooked the inn itself...
Indeed, Huang Donglai and Sun Yixie didn't do anything official all afternoon, but before leaving the inn, Huang Donglai had secretly instructed a clerk there to handle a matter for him.