火眼金睛

Explanation: Originally referred to the "Journey to the West" in the eyes of the Monkey King to identify ghosts and goblins. Later used to describe the discerning person can identify the authenticity. 　　Usage: Joint type; as object; that people look sharp, penetrating 　　Source: Ming Wu Cheng-en, "Journey to the West" 40 back: "I am Monkey piercing eyes, recognize good and evil." 　　Examples: Only the wind preventing the smoke, to a fried red eyes, and get to be a old eye injury, so a judge and ~. (Ming Wu Cheng-en, "Journey to the West," the seventh back)