A form of "proto-biochemistry" where practitioners used meditation and diet to manipulate the body's internal chemistry. Part 7: The Gunpowder Epic

The pursuit of physical immortality through chemical experiments, which accidentally led to the discovery of gunpowder.

Here is a look at why specific parts of Volume 5 are so legendary: Part 1: Paper and Printing

Which specific within Chinese history are you most curious about?

This part is a historical bombshell. It meticulously tracks how "fire-drug" (gunpowder) evolved from a fumigant to frighten spirits into the world's first flamethrowers, grenades, and cannons. Needham famously debunks the myth that the Chinese "only used gunpowder for fireworks," proving they developed sophisticated artillery long before these designs migrated West via the Silk Road. Part 9: Textile Technology