《资治通鉴·唐纪·唐纪四十一》
京师干旱，京兆尹黎干制作土龙来祈求雨水，自己与男女巫师交替舞蹈求雨。
京师旱，京兆尹黎幹作土龙祈雨，自与巫觋更舞。
There was a drought in the capital, and the Prefect of Jingzhao, Li Gan, made an earth dragon to pray for rain, and he and the male and female sorcerers took turns dancing to pray for rain.