C525 Successful Tempering

525. Successful quenching.

"Thirteen steel column... Currently, my comprehension of the sword force has already reached 15%!"

Qin Feng said with a pleasantly surprised expression on his face.

Although he had only improved by about half a percent, Qin Feng was quite happy. After all, this wasn't a simple improvement. The comprehension of the sword force was incomparably obscure