The Half-Moon Night spans two evenings, and only during the night can the Gold Silk Armor continue to point the way. Therefore, during the daytime, those Japanese ninjas didn't move at all and stayed in the hotel to rest.
With no movement from the Japanese ninjas, those tracking them naturally stayed put as well. Ye Qing and Fu Qingping spent a whole day in the hotel, not even leaving their room to avoid being discovered by people from the Church.
During this day, Ye Qing was also keeping an eye on the movements of the Church's members. However, their situation was similar to Ye Qing's; these individuals were also hiding in the hotel, never showing themselves. This made Ye Qing even more certain that they must have some tracking device, which is why they could stay in the hotel without worry.
