C709 The Difficulties of a Tier 5 Pill King

If Tang Ao did not have the Shen Nong Emperor's inheritance, he would not be refining 21 different kinds of herbs at once when refining the Mysterious Life and Death Pill. In the inheritance jade slip of the Shen Nong Emperor, the Shen Nong Emperor said that although the Flying Tobacco and Silver Radiance Flower had opposite attributes, they had to refine the medicine at the same time