eeve, use them. But if not, then I will kill you and leave."Chen Ping smiled calmly."How is that possible"Xia Chao's eyes widened in disbelief. He had even been willing to consume his own Yin Qi, but...in the valley. He could also refine pills that made people strong and healthy, most importantly, he could make people live longer.Soon, many people followed the old man to learn medical arts and alche...