佛祖統紀 40.18

40.18

三年。詔一行禪師入見。帝諮以安國撫民之道。及出世法要。稱為天師（天子之師）帝問。國祚何如。對曰。鑾輿有萬里行社稷終吉。以金合進曰至萬里即開視乃當歸少許耳。祿山之亂帝幸成都。至萬里橋悟當歸之讖。洗然忘憂。終吉者至昭宗而絕。以曾封吉王也。

In the third year, an edict summoned Chan Master Yixing for an audience. The Emperor consulted him on the way to bring peace to the state and comfort to the people, as well as the essential dharmas of world-transcendence, addressing him as the Imperial Preceptor (the Teacher of the Son of Heaven). The Emperor asked, "How will the fortunes of the state fare?" He replied, "The imperial carriage will make a journey of ten thousand li; the altars of state will end in auspiciousness (ji)." He presented a golden box, saying, "Open and look at it only when you reach ten thousand li." Inside was merely a small amount of angelica (danggui, "ought to return"). During the rebellion of An Lushan, the Emperor traveled to Chengdu. Reaching the Ten-Thousand-Li Bridge, he realized the prophecy of danggui ("ought to return"), and, completely relieved, forgot his sorrows. As for "ending in auspiciousness" (zhongji), it ceased with Emperor Zhaozong, because he had once been enfeoffed as the Prince of Ji.