Genshin Impact contains a large number of world bosses, which you can find while exploring each of the three main areas. The Perpetual Mechanical Array is a new boss that resides in Inazuma and was added in Update 2.0.
Go to the location on the map above and use the new marine vehicle to sail north to reach the southern end of Jinren Island. After arriving at Jinren Island, look for an Electrogranum plant on the smaller one of the two islands. It will be on your right, in the middle of an island. Summon Electrogranum and press L1 + Circle several times to fly directly to the portal. The portal will take you to the room where the Eternal Mechanical Array is waiting to fight.
How to Beat the Perpetual Mechanical Array
The Perpetual Mechanical Array looks like the cube found in Liyue and Mondstadt, but it is slightly differently. Things can get a little crazy, because this boss can attack from different angles at the same time.
Long-range characters like Ganyu, Klee, and Ningguang can cause serious damage while maintaining safety so get them first. Close-range characters such as Hu Tao, Ayaka, Razor, Beidou, Diluc, Keqing, and Eula are also feasible as long as they have the support of excellent healers such as Bennett, Gene, Qiqi, and Barbara.
It will use some attacks, such as turning his entire body into a huge weapon, or hitting you with his body. However, these are easy to evade. The hardest part of the battle is when the boss is split into different parts while at the same time enclosing its core in an impenetrable shield.
When this happens, attack the part of his body that has a health bar. The divided parts will attack with lasers and projectiles, which may be a bit difficult, but you can also attack the cores of individual parts to paralyze them and slow them down.
Once you empty the health bar, the core will be exposed and vulnerable. Repeat this process until the battle is over. It is also important to note that, unlike the Hypostasis cube, this boss has no immunity to any type of elemental attack, so elemental combinations and reactions will be effective. It also does not heal in a low health state like others, so keep pressure to avoid it while sprinting, and it will be destroyed immediately.