Purchase to obtain 980 Monochromes in Zenless Zone Zero.
On your first purchase, obtain an extra 980 Monochromes.

Monochromes can be used to purchase bundles and can be traded for Polychromes.
Polychromes can be traded for Encrypted Master Tapes, Master Tapes, Ether Batteries, etc. Encrypted Master Tapes and Master Tapes can be used in Signal Search for a chance to obtain rare Agents and W-Engines.