2/2
[Her otherwise flustered face was quickly replaced with that of curiosity as she gently took the note with a quick word of thanks. Examining the bill, she answered Li's question --]
An orbital elevator is a structure placed at strategic points around the Earth's equator, made to transport people and material into geostationary orbit. As the name implies, it works like an elevator, and will double as a solar power satellite.
[-- and drawing from his question and his possession of cash --]