《后汉书·列传·郎顗襄楷列传下》
希望陛下再三思虑，在这点上多多留神。左右宠幸之人，也应想想臣下的话，使陛下醒悟。古之善言对今天有益，天之善言对人也有用。希望访问百官，如认为臣言不对，臣当受苟言之罪。 第五件事：臣私下看到去年闰十月十七日己丑夜，有白气从西方天苑趋左足，入玉井数天后不见了。
五事：臣窃见去年闰月十七日已丑夜，有白气从西方天苑趋左足，入玉井，数日乃灭。
I hope your majesty will think carefully and pay more attention to this point. The eunuchs favored by your majesty should also think about what the officials said, and make your majesty realize the truth. The good words from the ancient times will benefit today, and the good words from heaven will also benefit humans. I hope you can consult with the officials, and if you think my advice is wrong, I am willing to take the blame. Fifth: I personally witnessed on the night of Ji Chou in the intercalary month of October last year that there was a white ray of light pointing towards the left foot from the Western Tiangyuan, which entered Yu Jing and disappeared after a few days.