China just pushed data through 1,000 km of hollow glass — 64 terabits per second, in both directions at once. China Telecom has completed the world's first 1,000-kilometre hollow-core fibre test: a 1,007.48 km link carrying 64 Tb/s each way, simultaneously. One-way, the signal crossed the full distance in 3.43 milliseconds. The trick is what is inside the cable. Normal fibre sends light through solid glass. Hollow-core fibre sends it through air — and light travels faster through air than through glass. That is why the money world should care. In trading and AI, milliseconds are worth billions. A faster backbone means faster trades, faster links between AI data centres, and cheaper long-haul capacity. Microsoft is already moving. It has deployed 1,280 km of hollow-core fibre inside Azure and is targeting 15,000 km by late 2026. This is no longer a lab demo — it is procurement. The catch: the test stitched together more than 300 spools of fibre, and standards bodies are still reviewing the specs. Carriers cannot buy this off the shelf yet. But the direction is set. The internet's next speed jump will not come from more glass — it will come from less of it. BTC sits near $75,780, down about 0.1% on the day.