《礼记·月令》
仲春二月，如果施行秋季的政令，国家就会发大水，寒气就会突然降临，敌寇就会前来侵犯。
仲春行秋令，则其国大水，寒气总至，寇戎来征。
In the second month of mid-spring, if the government implements the policies of autumn, the country will be hit by a flood, cold air will suddenly descend, and enemies will invade.