Duan Qiantai could only see Ning Cheng's constant movements, throwing out some impurities at the same time, but his consciousness could not sweep into Ning Cheng's alchemy furnace. This is not only because Ning Cheng has placed a layer of restrictions outside the alchemy furnace to isolate his spiritual consciousness, but Duan Qiantai himself also knows that he cannot easily sweep his spiritual consciousness into the alchemist's alchemy furnace to avoid affecting the formation of the elixir....