On the other side, Klein was feeling extremely uncomfortable.
As the golden energy increased, Klein's pain also increased.
At this moment, he had thoroughly investigated the specific reason.
With the help of the system, Klein finally knew why he had pain.
The reason was the blood vessels that flowed through Klein's abdomen. After they turned golden, they continuously surged towards his heart.
However, it wasn't that fast to reach his heart.
After all, the golden energy was only the initial melting process, and there wasn't much of it left.
Therefore, with every circulation, a small amount of golden energy would be wrapped up by the blood and enter his heart.
In the end, it would be absorbed by the blood vessels on the way to his heart.
When the blood vessels that had absorbed the golden energy completely changed, Klein began to experience a heart-wrenching pain.
It was the same every time.
