Wuthering Waves is getting additional content with the Second Coming of Solaris event, meaning you can visit Maqi every day.
Crownless Complete Guide – Wuthering Waves
Unless you were interested in finding all the Sonance Caskets in Wuthering Waves, you probably stayed away from the Pioneer Association building in Wuthering Waves. But now it seems that every quest in The Second Coming of Solaris must be completed through Maqi, the Association’s receptionist. Every day, you’ll approach her and ask what needs to be delivered. In Crownless?, she has a vague request. In this guide, I’ll show you how to start and complete The Crownless One, as well as what rewards you can get.
To start Crownless? in Wuthering Waves, complete the first two main story missions and reach Union level 14. This unlocks the Second Coming of Solaris event and side missions. Next, talk to Maqi at the Pioneer Association in Jinzhou City. When you do, Maqi will assign you a mission called "The Crownless One" or "The Crownless" depending on which menu you're in.
To complete Crownless?, you'll need to give Maqi the reward you get for defeating The Crownless in Wuthering Waves: An LF Whisperin' Core. This is the same material you use to upgrade your weapons and Resonators at the start of the game.