The Hydro Hypostasis is another fascinating elemental Hypostasis in Genshin Impact, known for its unique mechanics and water-based attacks. Here's a comprehensive overview.
Image via HoYoverse.
The Basics
•Location: Liyue Region: This boss resides in the area near Qingce Village, specifically at the Qingxu Pool, southeast of the city of Liyue.
•Appearance: The Hydro Hypostasis takes the form of an elegant, floating dodecahedron with hydrodynamic patterns that flow across its surface. It's surrounded by water orbs that orbit its central body, which occasionally morph its structure.
Combat Mechanics
•Phases: The battle against the Hydro Hypostasis involves several phases with distinct behaviors:
•Initial Phase: It starts with a protective barrier that must be broken by consistent damage.
•Water Orbs: After the barrier is down, it will summon smaller water orbs that can be destroyed for damage or used for reactions.
•Structural Changes: Throughout the fight, it changes its form, sometimes creating pillars or flooding parts of the battlefield.
Attacks
•Water Columns: Summons vertical columns of water that can push players away or deal Hydro damage.
•Water Blades: Releases spinning blades of water that travel across the field.
•Hydro Beam: Fires a powerful beam of water that can sweep across the arena.
•Flooding: Occasionally, it will flood the area, creating a slippery surface or pools of water that can affect movement.
Strategy 
•Elemental Weakness: The Hydro Hypostasis is weak to Electro and Pyro. Characters like Fischl, Beidou for Electro, or Diluc, Bennett for Pyro can trigger reactions like Electro-Charged or Vaporize, dealing extra damage.
Avoiding Damage
•Utilize characters with good mobility or crowd control like Venti or Sucrose to avoid being cornered by water columns or blades.
•Characters with abilities that provide invincibility or high mobility can evade the Hydro Beam.
•DPS Focus: When its barrier is down, focus on DPS. Characters with high burst damage like Keqing or Klee can be effective.
Elemental Reactions
•Triggering reactions like Overload (Pyro + Electro) or Electro-Charged (Hydro + Electro) can not only damage the boss but also its orbs.
•Healing and Shielding: Since it deals Hydro damage, having a healer like Barbara (who also provides Hydro) or a shield like Zhongli can be beneficial.
Team Composition
•DPS: Characters who can deal consistent Electro or Pyro damage like Razor or Hu Tao.
•Supports: Electro characters like Fischl or Pyro supports like Xingqiu for elemental reactions.
•Healer: Characters like Jean or Kokomi can provide both healing and Hydro application.
•Utility: Characters like Venti for crowd control or Zhongli for shields against Hydro attacks.
Rewards
•Defeating the Hydro Hypostasis grants:
•Primogems
•Hero's Wit
•Mystic Enhancement Ore
•Talent materials like "Teachings of Resistance" or higher tiers for character ascensions.
Tips: 
•Positioning: Be mindful of the battlefield's wetness. Slippery surfaces can affect your dodge timing.
•Elemental Mastery: Characters with high Elemental Mastery can benefit from the frequent reactions.
•Orb Management: Prioritize destroying the smaller water orbs to deal damage and potentially trigger reactions.
•Dodge Timing: The Hydro Hypostasis's attacks, especially the beam, have clear telegraphs, allowing for precise dodging.
The Hydro Hypostasis offers a unique challenge due to its environmental impact and the necessity for strategic elemental reaction management, making it a key component of the endgame content for players looking to test their skills in Genshin Impact.
