佛祖統紀 41.9

41.9

In the sixth year, Li Youqing, the prefect of Chuzhou, memorialized that Śramaṇa Fachen had built a Buddhist monastery on Mount Langya and presented a painted illustration. On the preceding night, the Emperor had dreamed of wandering to a mountain monastery, and upon viewing the illustration, it was entirely identical to the place he had visited in his dream; he therefore bestowed the name Bao'ying Monastery. The Uyghurs requested to establish Dayun Guangming Monasteries in prefectures such as Jingzhou, Yangzhou, Hongzhou, and Yuezhou; their followers wore white robes and white caps.