唐前期的政治斗争中,天文图谶往往成为宫廷政变、政治革命以及朝臣攻谮的舆论工具。特别是在政治斗争的关键时刻,天象的变化似乎反映出天命所属的象征意义,故在前期的宫廷政变和兵事谋叛中,总会有人从天象的角度来为事变的正常进行寻找合理依据。这在“玄武门之变”、李承乾谋叛、房遗爱事件及玄宗即位前的政治斗争中都有明确体现。 In the pre-Tang political struggle, astronomical maps often became the media of public opinion for court coup, political revolution and court attack. Especially at the crucial moment of the political struggle, the changes in the phenomena of the sky seem to reflect the symbolic meaning to which destiny belongs. Therefore, in the early court-coup and rebellions of the military, there were always people who, from the perspective of the astronomical phenomena, sought a reasonable basis for the normalization of incidents . This is clearly reflected in the “Warlords of Xuanwu Gate”, Li Chengqian’s rebellion, the events of the ancients’ love and the political struggles before the arrival of Emperor Xuanzong.