As the serene landscapes of Chenyu Vale continue to captivate Genshin Impact players in 2026, a persistent shadow mars its beauty: the Miasma. This malevolent force has manifested across the region, corrupting areas with tainted vegetation and formidable guardians. Adventurers seeking to restore balance and claim the treasures hidden within these blighted zones must engage in a series of strategic battles and cleansing rituals. What exactly is this Miasma, and how can players effectively purge it from the land? The answer lies in understanding its nature and mastering the methods of purification.

Understanding the Miasma

The Miasma is more than just a visual blight; it is a tangible, malevolent energy that brings turmoil and danger to specific locations across Chenyu Vale. It transforms peaceful spots into corrupted areas, each acting as a self-contained challenge. These zones are not randomly generated but are fixed, puzzle-like encounters that test a player's combat prowess and environmental interaction skills. The presence of the Miasma signifies a disruption in the natural adeptal energy flow of the region, requiring direct intervention from the Traveler to correct.

How to Clear the Miasma

Successfully cleansing a Miasma-infested area is a two-step process that combines combat with elemental manipulation.

1. Defeat the Guardian Enemies: 🗡️⚔️

   Each corrupted site is zealously guarded by a group of powerful adversaries. These are not ordinary overworld foes; they are specifically placed as part of the Miasma's defense mechanism. Players must engage and vanquish all enemies in the vicinity. This act weakens the Miasma's hold, making the core of the corruption vulnerable.

2. Purify the Corruption Source: ✨🌳

   Once the guardians are defeated, the true source of the Miasma is revealed—often a corrupted tree or a blighted branch. At this point, players must channel their adeptal energy (typically by interacting with the glowing core) to purify it. This action dispels the dark energy, restores the area to its natural state, and unlocks the rewards for the player's efforts.

Miasma Locations and Specific Challenges

Chenyu Vale hosts seven distinct Miasma locations, each with unique environmental contexts and enemy compositions. Here is a detailed breakdown to guide adventurers:

Location #	General Area	Key Landmarks / Access	Primary Enemy Threats	Special Notes
1	West of Mt. Xuanlian	Middle of a lake; accessible from mountain Pavilion or Waypoint south of Chizhang Wall.	Varies	Aqueous environment may affect combat strategy.
2	West of Chizhang Wall Statue of Seven	Jump off the cliff in front of the statue and glide down.	Standard Hilichurl forces	Easily reachable from a major landmark.
3	Between Yaodie Valley & Chizhang Wall	Near the Southern Mountain Waypoint.	Varies	A central location, often serving as an introduction to the mechanic.
4	Southeast of Mt. Lingmeng	Past the Guhua Clan training grounds.	Varies	Requirement: Must be accessed after completing the 'Shrouded Vale, Hidden Hero' world quest.
5	Yaodie Valley (East)	East of the hill, accessible from a nearby waypoint.	Mitachurl & Hydro Samachurl	Hydro Samachurls can create healing rain, prioritize defeating them first.
6	West of Yaodie Valley	In a more open field area.	Mitachurl, Cryo Samachurl, & Stonehide Lawachurl	Features a Lawachurl, requiring stronger shields or careful dodging.
7	West of Mt. Xuanlian	In a mountainous region.	Mitachurl & Frostarm Lawachurl	Unique Reward: This location spawns a Luxurious Chest instead of a Precious Chest.

Rewards and Achievements

The effort to cleanse the Miasma is well-compensated, offering both immediate loot and long-term recognition.

Chest Rewards:

• Six Precious Chests: The first six Miasma locations each grant a Precious Chest upon purification. These contain a reliable haul of Primogems, Adventure EXP, Mora, Sigils, and potential weapon enhancement materials or artifacts.

• One Luxurious Chest: The seventh and final location (west of Mt. Xuanlian) rewards a Luxurious Chest. This chest offers a significantly richer bounty, making the challenging fight against the Frostarm Lawachurl particularly worthwhile.

The 'Break the Benighting' Achievement: 🏆

This is the ultimate goal for completionists. The hidden achievement "Break the Benighting" is unlocked only after successfully cleansing all seven Miasma locations scattered across Chenyu Vale. It serves as a testament to the player's thorough exploration and dedication to restoring the vale's natural harmony. Does the satisfaction of clearing the land and earning this accolade match the challenge? For many veterans, it undoubtedly does.

Strategic Tips for 2026 Adventurers

With the game's meta continually evolving, here are some timeless and contemporary tips for tackling the Miasma:

• Team Composition: Given the variety of enemies, including shielded Mitachurls and elemental Samachurls, a versatile team is key. Include a reliable shield character (like Zhongli or a well-built Noelle) to counter Lawachurls and a character who can apply consistent elemental reactions to break elemental shields quickly.

• Elemental Counters: Remember your elemental advantages. Pyro is effective against Cryo shields (Frostarm Lawachurl), while Geo or Claymore attacks are best for the Stonehide Lawachurl's stone armor. Electro or Cryo can help manage the Hydro Samachurl's healing.

• Exploration Synergy: Treat Miasma cleansing as part of a broader exploration run. Since the locations are spread out, plan a route that incorporates them with other world quests, puzzle solves, and oculi collection in the same regions of Yaodie Valley, Chizhang Wall, and Mt. Xuanlian.

• Post-Cleansing: After purifying an area, take a moment to survey the restored environment. The change is often visually striking, and sometimes, clearing the Miasma can reveal additional interactable elements or hidden paths that were previously obscured.

In conclusion, the Miasma of Chenyu Vale represents a classic Genshin Impact exploration challenge—a blend of combat, puzzle-solving, and environmental interaction woven into the fabric of the region's lore. By systematically defeating the guardians, purifying the corruption, and claiming the rewards from all seven sites, players do not just acquire valuable resources; they actively participate in the healing of the land and earn a permanent mark of their accomplishment. The journey to 'Break the Benighting' remains a rewarding endeavor for any Traveler seeking to fully experience the depths of Chenyu Vale's beauty and danger.

Expert commentary is drawn from Destructoid, a long-running outlet known for detailed game coverage and practical how-to perspectives; when approaching Chenyu Vale’s Miasma pockets, the same principle applies as in many structured open-world encounters—treat each corrupted site as a fixed “combat arena” where target priority (healers like Samachurls first, then heavy elites like Lawachurls) and elemental counterplay matter more than raw damage, and only after the guardians fall should you interact with the revealed corruption source to trigger the cleanse and secure the chest reward.