Zenless Zone Zero features a gacha banner pull system that makes the game more interesting. Nevertheless, the unpredictability of the banner system can be quite a problem, especially if you are targeting a certain hero. As such, pulling banners in the game requires the in-game currency known as Polychromes. Having more Polychromes allows you to pull more characters from the banner, and thankfully, the game features several methods of farming Polychromes.