For example, in "Water Margin", Wu Yong and Song Jiang, two wise men, gave birth to the story that Wu made a jade unicorn with his own wisdom in order to get Lu Junyi on board. Taking advantage of Lu Junyi's fear of avoiding a bloodbath, he occupied four divination positions: a ship among reeds, from which Jie Jun and Russia set out. If an upright man can know this, he can't escape from the bow. Lu Junyi's anti-four-character, hidden, is widely circulated.