C140 Male Blood

If Leh Feng refused again, it would seem like he was putting on an act. Moreover, he really had a difficult problem ahead of him.

Therefore, Leh Feng explained the problems in his heart one by one to Xuan Lao. Some problems were the most basic ones in pill refining, but Xuan Lao was still patiently explaining them to Leh Feng.

In any case