Perceptual defense refers to the tendency of people to protect themselves. This tendency makes it easier for people to pay attention to those things that can meet their needs, and to ignore those things that can not satisfy their needs.
not perceptual defense?
It's a sigh that Empress Liu is so stupid that he still sets up temples to enjoy worships; at sunset, I will learn from Kong Ming and talk about the poem about Liang Fu (a person who has rendered outstanding service).