Wuthering Waves 3.7: Mengzhou Story, Hsin, Phase II and QoL Changes

Wuthering Waves Version 3.7, Prism’s Illusion, Heart’s Illumination, is now live, advancing the game’s Mengzhou storyline while adding a new explorable setting, playable Resonators, quests, events, weapons, Echoes and a substantial set of interface and quality-of-life changes.

For players focused on the narrative, the centrepiece is Chapter IV Act IV, “Simulacrum of the Heart.” The version also opens the Simulacrum Nexus of Mengzhou, making the update more than a character-and-events release. It gives the ongoing Mengzhou arc another story chapter and a new area tied directly to it.

Version 3.7 is split across two phases. Phase I is available now with Hsin as a playable Resonator, alongside Chisa and Iuno. Phase II begins on October 22, at server time, and brings Suoming, Lucilla and Lynae. That schedule matters for anyone deciding how to approach the version’s banners, weapons, login rewards and time-limited activities: not every headline addition arrives on day one.

A new Mengzhou chapter and the Simulacrum Nexus

“Simulacrum of the Heart” is the new main-story installment in Version 3.7. It is accompanied by the Simulacrum Nexus of Mengzhou, which is the newly opened area for the patch. The update further includes a Tales quest, “Moonlike Heart, Mortal Longing,” giving players a separate named quest addition beyond the main Chapter IV Act IV progression.

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The term simulacrum generally refers to an imitation, representation or constructed likeness. Here, it appears in both the act title and the new area’s name, establishing a clear thematic thread for this part of Mengzhou. Beyond those names, players should avoid assuming specific plot turns or gameplay structure until they encounter the content themselves; the available details establish the setting and chapter, but do not spell out story outcomes.

There is also a new permanent event, Blooms for the Shadow. “Permanent” is a valuable distinction in a live-service update. Unlike an event tied to a fixed calendar window, it is positioned as content that remains available rather than something players must finish during the first stretch of Version 3.7.

Phase I and Phase II: what arrives when

The update’s release plan is divided in a familiar two-stage format. Phase I is the currently available portion, while the second slate follows on October 22. That division applies to Resonators and Featured Weapons, so it is useful to keep the two sets separate.

Related coverage includes Wuthering Waves 3.7 Opens Mengzhou’s Simulacrum Nexus.

Phase I, available now

Playable Resonators: Hsin, Chisa and Iuno.
Featured Weapons: Blooming Jadehaven, Kumokiri and Moongazer’s Sigil.

Phase II, beginning October 22 server time

Playable Resonators: Suoming, Lucilla and Lynae.
Featured Weapons: Unspoken Rue, Freeze Frame and Spectrum Blaster.

Hsin is the newly introduced playable Resonator in the opening phase. The supplied update details also place Chisa and Iuno in that first phase, while Suoming joins the Version 3.7 roster in the second. Lucilla and Lynae arrive in the same later window. The phase framing is especially practical because it tells players which names belong to the live portion of the patch and which require waiting for the October 22 turnover.

The weapons follow that same cadence. Featured Weapons are normally the explicitly highlighted weapons in a given phase, rather than a catch-all list of every item in the game. Version 3.7’s named groups are therefore useful planning markers: Blooming Jadehaven, Kumokiri and Moongazer’s Sigil are associated with the first phase; Unspoken Rue, Freeze Frame and Spectrum Blaster are held for the second.

Echoes and a full events calendar

Five newly listed Echoes accompany the update: Formrender, Soulfrayer, Skywatch Lancer, Bloomburst Puppet and Jade Nether Serpent. In Wuthering Waves terminology, Echoes are a distinct category of player-facing combat and build equipment, so their addition expands the collection of available options rather than simply adding story scenery or event rewards.

Version 3.7 also has a broad mixture of permanent, limited-time and web-based activities. Alongside permanent event Blooms for the Shadow, the named lineup includes:

Cubie Wars
Dreams in the Capsule
Past Dreams
Traced Seals
Artisan’s Search
Echo Erase
Beyond the Waves: Land of Xuanfang
Gifts of Waking Moon
Waking Moon Fishing
Back to Solaris
Bountiful Crescendo
Chord Cleansing

Gifts of Waking Moon is identified as a login event. Bountiful Crescendo and Chord Cleansing are identified as double-drop events, meaning they are built around increased reward returns for the applicable activities. For players with limited time, double-drop periods are usually the clearest reason to shift routine resource farming into a particular window, though the update notes do not specify the precise rewards or duration for either event.

Web events are also part of the version’s slate. They are worth distinguishing from activities accessed inside the main game client: the name refers to events accessed through a web format, not necessarily ordinary in-world quests. The update information groups both types of activity together, so players looking to complete all Version 3.7 opportunities should check the event interfaces rather than relying only on the new Mengzhou content.

The practical upgrades: replay, inventory, camera and teams

Some of Version 3.7’s most enduring changes are not tied to its story or banner schedule. The Journey Log receives Main Quest Replay, allowing players to revisit selected earlier main content. The initial replay lineup covers content from Versions 1.1 and 1.3, as well as the Moon-Chasing Festival from Version 1.2.

Replay features are easy to overlook beside new characters, but they serve a different need. They let returning players revisit earlier narrative material and give active players an option to refresh their memory without waiting for an external recap. The scope is important, however: the stated availability is for those particular earlier-version entries and the Moon-Chasing Festival, rather than a claim that every prior main quest is immediately replayable.

Inventory management also changes through Echo stacking in the Echo Backpack. Stacking is an organizational function: matching or compatible inventory entries can be grouped together rather than each occupying an entirely separate visual slot. For a game adding further Echoes in the same update, this is a practical adjustment that can make sorting and reviewing stored Echoes less cluttered.

Photography gets two named additions, Handheld and Selfie camera modes. They expand the available ways to frame screenshots, which may be particularly welcome in an update introducing a new Mengzhou location. The information provided confirms the modes’ names, but does not detail their controls or every presentation option, so players should treat them as new camera perspectives rather than presume broader photo-system changes.

Team organization is receiving one of the clearest numerical improvements: players can maintain up to 20 named and reorderable team setups. A team setup is a saved party configuration. Naming those configurations makes it easier to recognize their intended jobs, while reordering means the most frequently used lineups can be kept at the front instead of buried amid older presets. It is a small feature on paper with potentially wide value for players who switch often between story exploration, events and other activities.

Version 3.7 includes a limited test of tiered client resource downloads for eligible players. A client is the installed game application. Tiered downloads generally describe an approach in which game resources can be divided into levels or packages instead of being treated as one undifferentiated set. The update specifically calls this a limited test and limits it to eligible players, so it should not be read as a universally available feature for the entire player base.

A new Pioneer Podcast season is also underway, with Podcast Tasks and optional Insider and Connoisseur channels that offer additional rewards. The important word is “optional”: these channels sit beyond the baseline task structure rather than being described as mandatory components of the season. No pricing or exact reward breakdown is specified in the available details.

Starting October 22, the Gifts of Singing Drizzle login event will provide a total of 10 Radiant Tide, plus Premium Tuner and Crystal Solvent. Because its start coincides with Phase II, it creates a clear second-half login checkpoint for players following the new phase’s Resonators and weapons.

Finally, the To the New World - World Tour Concert Pack is listed for purchase and includes the Rover’s Purrfect Pitch accessory. This is a purchasable pack, not a stated gameplay reward or a login item. The available information confirms the included accessory but does not provide a price, regional availability details or a complete list of all possible contents.

What Version 3.7 means for different players

For story players: Chapter IV Act IV and the Simulacrum Nexus are the obvious starting points, with “Moonlike Heart, Mortal Longing” providing another named quest and Main Quest Replay offering a way back to select older material.

For roster planners: the key division is now versus October 22. Hsin, Chisa, Iuno and the Phase I weapons are in the current phase; Suoming, Lucilla, Lynae and the remaining Featured Weapons are scheduled for the next one.

For regular resource players: the event list, the two double-drop activities, Echo additions and Echo Backpack stacking are the pertinent pieces. The latter may not change combat directly, but it could improve the day-to-day work of maintaining a growing collection.

For returning players: the combination of named team presets, camera modes and limited Journey Log replay support is designed around usability as much as the new story content. Version 3.7 is therefore a content expansion with a clear systems layer underneath it—not simply a new banner cycle.