《宋书·本纪·卷八》
太宗因为些小事情，根据已经实行的规章，翦除皇亲，本指望少些忧虑。由于不少皇亲翦除，幼主孤立无援，神器危弱，天命也随之更改。冰冻三尺，非一日之寒，由来远矣。
太宗因易隙之情，据已行之典，剪落洪枝，愿不待虑。既而本根无庇，幼主孤立，神器以势弱倾移，灵命随乐推回改。
Because of some trivial matters, Taizong killed his relatives based on the existing regulations. He originally hoped to worry less. Because many relatives were killed, the young emperor became isolated and helpless, his power was weakened, and the Heavenly Mandate changed accordingly. When a river freezes three feet deep, the cold weather had started long before. It had a long history.