“The Skill of Au Awazu: If you go to another province and associate with the local people, it is quite likely that you will happen to see a spy of the province from time to time. You should not show that you have noticed what he is, but pretend to be unaware of it when associating with this local spy. You do this because if he realizes that you know who he is, he will feed you false information. However, if you two always associate with each other, and as it is your job to lie, it is often the case that either of you may unintentionally give away the truth. This is called au awazu [outwitting the enemy spy].”