Yu Mingyuan in The Wind in Dragon City did not defect. In the novel "It's windy in Longcheng", Yu Mingyuan sticks to his beliefs and principles and devotes himself to achieving his goals. In the whole plot, Yu Mingyuan shows the characteristics of intelligence, wit and ambition, but he does not go against his original intention, and always maintains loyalty to the country and the people, does not take refuge in the enemy, and does not commit betrayal. The Wind in Dragon City is a science fiction novel, which tells the story that 60 years after the global catastrophe, the little freezing period ended, and a large-scale living government began to expropriate land in anarchic areas on a large scale for planning, reorganize resources and enter the recovery stage in an all-round way. This is a new region, where politics sets the stage, capital plays the opera, careerists are everywhere, heroes are heroic and treacherous, and a young man rises in a bright era with strategy in troubled times.