C960 Wrong Use of Pearls as Fish
Feng Yebai found evidence to prove that someone did come that night. The people that Saiji sent out to train were probably drugged and fell asleep, so they didn't know that anyone had come that night.
He then asked the others about the people who had been guarding the camp that night. They were all his people, so he didn't see anyone else come.
Saiji had never encountered such a thing before