The passage provides 'a statement of the doctrine of the inner and outer macrobiogens, all within the enchymoma realm' (See 'Science and Civilisation in China, Volume 5, Part 5', p. 40). The typescript translation has been heavily annotated and was 'redone by GDL [Lu Gwei-Djen] & JN [Joseph Needham], 16 Jan 69, just before she had to go to Papworth'.