《汉书·志·天文志》
岁星如果一运行一尺，出现二十余曰后隐入，《甘氏》中说 这种现象兆示其国有凶险，不可举事动兵 。
至日行一尺，出二十余日乃入，《甘氏》 其国凶，不可举事用兵 。
If the planet Jupiter travels one foot and then disappears after more than twenty days, Mr. Gan says that this phenomenon indicates that the country is in danger and military actions should not be taken.