To drill a hole in the fragment, you need the corresponding tiny "tools." The spiritual energy that has been successfully condensed into fine threads can come in handy.

The filament is incredibly resilient, yet very soft; it now needs some added strength.

Gu Xi extracted a thin thread from her mental energy cluster and processed it. Gradually, the mental energy thread straightened. She tried to thread the thread through the broken key, but the moment the thread touched the broken key, the end of the thread went limp and bent.

"Isn't it hard enough?"

Gu Xi touched the tip of the filament with her fingertip, and a stinging sensation came from her fingertip. She calmly withdrew her finger and continued to process the filament.

She tried several more times after that, and the results were similar to this one.

Although the plan didn't succeed, she still gained a lot in the process. She was certain that the stiffness of the filaments was increasing significantly.

The fact that it couldn't penetrate with such hardness is likely because she didn't apply enough force. However, it's unlikely that she could increase her force in a short time.

Gu Xi stared blankly at the thin wire, then suddenly she thought of the purpose of a drill and felt that she could try it herself.

She first made a thin thread, and then used her mental power to make the thread spin rapidly.

However, without the fine threads being cut, and connected to her mental sea, the faster the rotation speed outside, the more she could feel the turbulent waves being stirred up in her mental sea.

She never expected that a single thin thread could have such a powerful influence.

She quickly stopped and rested for a while before feeling her mind calm down.

This is really strange. When manipulating objects, the mental energy rope can be twisted without shaking the mental sea, but why is the feeling so obvious when it is a thin thread?

What if we first create a mental energy cluster, use this mental energy cluster as an intermediary, and then pull out the filament through the mental energy cluster?

Gu Xi had a general idea in mind, so she began to experiment.

She was very skilled at separating spiritual energy clusters from her spiritual sea, but she was less familiar with drawing threads from within those clusters.

Gu Xi tried several more times before finally managing to pull out the thin thread.

Now that the filament has been extracted, the next step is to make it spin. However, compared to before, she can now simply rotate her mental energy cluster, which is easier to do than rotating the filament.

This time, she started with the mental energy cluster, and soon she successfully achieved her goal.

Gu Xi suppressed her joy and focused intently on bringing the spinning thread closer to the key fragment.

Be more meticulous, even more meticulous.

She kept reminding herself of this.

She has little time and few opportunities left, so she must seize them.

When the rotating filaments of spiritual energy first touched the key fragment, due to the slight difference in position, they directly ground off one of the key fragments' edges.

The fragments of powder floated in the air, appearing crystal clear under the sunlight.

Although this was a mistake, because Gu Gu Xi's mental energy threads were fine enough, it did not cause much damage and would not affect the complete shape of the key.

Having learned her lesson, Gu Xi closed her eyes and reopened them. She calmly drank a bottle of mental energy recovery potion and then continued working.

She carefully sewed each piece together along the edges of the fragments, and as her skill improved, her speed increased.

After several hours of hard work, she finally restored the key to its original state.