《资治通鉴·唐纪·唐纪四十二》
对于长江五岭间距离产盐地遥远的地方，便将官盐转运到那里贮存。
其江岭间去盐乡远者，转官盐于彼贮之。
In areas far from the salt-producing areas, such as the region between the Yangtze River and the Five Ridges, official salt was transported there and stored.