In the Seven Day World, there is also a collection gameplay. The collection mentioned here refers to the containment objects in the game. Players need to collect these containment objects. When it comes to collecting containment objects, many people find it difficult and don't know how to collect them. So, let's take a look at the complete list of containment objects in the Seven Day World. After reading this, you will know which containment objects are in the game and how to collect them.

Regarding the containment objects, the first one is called the Far-Returning Butterfly. This containment object can be obtained through the novice plot. You just need to progress through the story, and once completed, you can obtain this containment object.
The second containment object is Active Gel. This containment object needs to be obtained by defeating the Rotting Shadow Hunter boss. There is a probability that the boss will drop it upon defeat, but remember, it's not guaranteed. Obtaining this containment object has some difficulty.
The third containment object is called Mr. Wish. This containment object requires completing the hidden level of the Containment Well Sigma. The acquisition is also based on probability, not a fixed drop, so some luck is needed.
The fourth containment object is the Extreme Cold Jellyfish. To obtain this containment object, players need to complete the cargo contention mission and then be possessed by the Rebirth Seed. After being possessed, they can obtain this containment object.

The fifth containment object is the Whispering Lone Wolf. This containment object can be obtained by completing the hidden boss Shadow Hound in the Fang副本攻略隐藏boss暗影猎犬获取,在攻略后boss有概率会掉落该收容物。
The sixth containment object is the Staring Black Cat. This containment object requires players to obtain it through the Containment Well Sigma. After passing the hidden level, there is a probability of obtaining this containment object.
The seventh containment object is the Child of the Void. This containment object requires players to complete the PVE storyline "Root War" and use the controller to reach the third-tier reward. In the reward box, there is a probability of obtaining this containment object.
The eighth containment object is the Foul Bulb. This containment object requires players to plant onions, and during the planting process, there is a probability of producing this containment object.
The ninth containment object is All-Cut. This containment object requires players to complete the seasonal goal challenge task, which involves using melee weapons to kill 200 enemies. After completing the kills, you can obtain it, or open boxes in the large world, where there is a probability of finding this containment object.
The tenth containment object is the Mini Yellow Coat. This containment object can be obtained by exploring the foggy area, where all boxes have a probability of containing this containment object.

The eleventh containment object is the Shattered Maiden. This containment object can be obtained by completing the side quest "Farm Horror" or by participating in any reverse event in the large world area. However, the former method guarantees the acquisition, while the latter is based on probability.
The twelfth containment object is Dr. Bear. This containment object can be obtained by completing the storyline quest or by clearing the hidden level of the Containment Well Sigma. The former method guarantees the acquisition, while the latter is based on probability.
The thirteenth containment object is the Red Dragon. This containment object can be obtained from the Containment Well Fei or by opening the containment object treasure chest from the shop. This containment object is somewhat special, and it is recommended to obtain it through the treasure chest because the Red Dragon in the chest can mutate, different from the ordinary Red Dragon.
The fourteenth containment object is the Voodoo Doll. This containment object can be obtained by completing the vulture control point in the large world or by exploring the Evergreen Hotel and opening boxes. The former method has a higher probability of acquisition, while the latter has a lower probability.

The fifteenth containment object is the Mysterious Singularity. This containment object can be obtained by completing the side quest "Blackfield Town Bar" or by crafting a vortex generator at the workbench.
The last containment object is All-Cut. This containment object can be obtained by completing the Containment Well dungeon in the Snow Country or by completing the main storyline in the Snow Country. The former method is based on probability, while the latter guarantees 100% acquisition. These are the main containment objects in the game and their methods of acquisition.

The above is the complete list of containment objects in the Seven Day World. After reading the above, recognizing these containment objects and understanding their acquisition methods, when you want to collect these containment objects in the future, you can find the corresponding collection method according to the containment object you need and then collect them. As long as you follow the guide, completing the full collection of containment objects is just a matter of time.