The Military Record(Bing Lu)

• Local Innovations: Detailed illustrations of weapons like the "Swift Thunder Gun" (a five-barreled revolving arquebus) and the "Rumi Bird Gun" (an improved Ottoman-style matchlock).
• Sino-European Synthesis: Documents three localized versions of the Portuguese breech-loading swivel gun (Folangji).
• Ammunition Advance: Describes granulated gunpowder production, increasing propulsive efficiency by an estimated 40%.

• Qi Jiguang's Legacy: Training manuals for specialized weapons like the wolf-brush and the lance-fork.
• Ergonomic Design: Weapons optimized for the average height of southern Chinese soldiers.
• Countering Japanese Blades: Analysis of Japanese sword armor-piercing capabilities and effective counter-weapons.

• Proto-Bastion Design: Proposes projecting artillery platforms, predating similar European concepts by decades.
• Material Science: Records test data on the cannonball resistance of "three-in-one mortar" (lime, clay, sticky rice soup).
• Subterranean Defense: Includes listening urns, counter-tunnels, and poison gas mitigation systems.

• Fuchuan Junk Technology: Explains the hydrodynamic principles behind watertight bulkheads, balanced rudders, and leeboards.
• Systematized Fire Attack: Integrates two-stage rockets and timed naval mines.
• Blue-Water Operations Manual: Contains knowledge on tides, monsoon navigation, and open-sea piloting.

• From 'Mandarin Duck' to Wagon Fort: Shows how Qi Jiguang's small squad tactics were scaled into combined-arms brigades.
• Integrated Firearm Tactics: Details volley fire techniques and artillery-infantry coordination.
• Psychological Warfare: Standardized codes for flag signals, drumbeats, and beacon fires.

• Standardization: Establishes national production standards for everything from arrowheads to cannon.
• Military Medicine: Treatises on treating gunpowder burns, preventing miasma, and battlefield amputation.
• Military Ecology: Studies frontier horse breeding, drought-resistant crops, and water purification.