Dongfang Shuo
The "Records of Penetration into the Mysteries" (, "Dòngmíngjì") describes ritual activities of Emperor Wu of Han (r. 141-87 BCE). It is traditionally attributed to Guo Xian (, -57 CE) but probably dates from around the 6th century. Although this text does not mention Zhuyin or Zhulong by name, Wu's Taoist advisor Dongfang Shuo describes a mythical northern "Azure Dragon" which bears a torch: