[Zhou yi] Cantong qi

Golden Elixir Press will soon publish Fabrizio Pregadio's study and translation of the important internal alchemy text, Cantong qi (Seal of the Unity of the Three). Check the Golden Elixir page here to get an idea of what this text is and see some samples from the translation. Dr. Pregadio also provides a freely downloadable .pdf file of a gallery of many of the Chinese editions of this work beginning from the 700's.