"Fuck!"
"This thing was way too useful."
At the edge of the North Fourth Ring.
Inside a half-collapsed building.
Ye Shi crouched by the window, excitedly fiddling with the tablet in his hands.
Not far in front of him, a quadcopter drone with a camera hanging beneath it buzzed as it hovered outside the window.
This was the latest piece of equipment released by the expedition team after the quadruped robot—the "Y-1 Firefly" quadcopter drone.
The drone used A3 aerospace aluminum produced by the Barchi Aluminum Plant, a solid-state hydrogen battery manufactured by Lister's factory, neural interface components produced by Vault 117's black box, and carbon nanotube circuitry and control equipment modified from the all-purpose wrist-mounted computer, the VM.
It was not particularly expensive, costing only 1,000 silver coins—roughly half the price of a Miner Type I exoskeleton.
Since this equipment had been independently developed by Vault 404 and did not rely on imports, the purchase requirement was low. Anyone with the contribution rank of "Citizen" could buy it.
Thanks to its lightweight materials, the drone weighed only 73% as much as a real-world drone of the same size, while its protection had increased by 50 to 70%. More than that, the solid-state hydrogen battery's long endurance allowed it to hover in the air for up to twelve hours.
If users were especially paranoid about battery life, they could also attach an additional battery pack on top of the original one.
The equipment was positioned as a close-range tactical reconnaissance drone. Since it came equipped with a neural interface, it was recommended for Intelligence-type players.
The camera assembly was made from salvaged pre-war surveillance equipment. Its resolution was extremely high, and it could still clearly make out pebbles on the ground from more than a hundred meters away.
To sum