《智囊(选录)·术智部·东方朔》
武帝就派一名方士陪东方朔一起上天取药，并且约定三十天后回宫复命。
上即遣方士与俱，期三十日而返。
Emperor Wu sent a Taoist priest to accompany Dongfang Shuo to take the medicine from the sky and asked them to report back after 30 days.