Yang Ling went back to the cave and looked at the red sperm. He said with a smile, "I didn't expect that you could cultivate so fast that you could become a dragon tiger golden elixir!"

the red sperm said: "teacher, the next step for the disciples is to understand the five elements and the changes of yin and Yang. Please point out a clear way."

Yang Ling said with a smile, "I haven't cultivated myself to your level. But it's not two days a day to understand the mystery of heaven and earth. Being a teacher is not helpful. " Think about it, take the purple spirit thunder sword...