《资治通鉴·唐纪·唐纪五十三》
宪宗颁制命令分出资州、简州、陵州、荣州、昌州、泸州六地，归属东川。
制割资、简、陵、荣、昌、泸六州隶东川。
Emperor Xianzong issued an imperial edict to divide the six regions of Zizhou, Jianzhou, Lingzhou, Rongzhou, Changzhou, and Luzhou and assign them to Dongchuan.