Chapter 840: The young woman's choice (1)

After seeing that the nuclear bottle cap was successfully manufactured, Tang Zhen casually sucked one over to check.

He found that the production process was extremely perfect, and there was no trace of any new production at all. It was exactly the same as the nuclear bottle cap used here!

Tang Zhen completely relaxed when he saw this scene.

The next step was the long production process. Tang Zhen no longer stared at it. Instead, he sat cross-legged and began to practice the mental energy cultivation method that he had just obtained.

In the living room in front of him, the number of nuclear caps was also increasing, gradually piling up into a small mountain.

At this moment, Tang Zhen, who was sitting cross-legged in the room, had a face as still as water. His breath was long and drawn out, just like a silent rock.