C26 Message from the Ares-class

Leng Mufeng looked hesitantly at the gold and said to Tulu, "Take out the crystal core of a Rank 4 Demonic Beast. They will sell it to whoever they see."

Tulu answered and put down the leather bag on his back. He took out a few crystal cores of a rank 4 demon beast and inadvertently revealed the crystal cores of the rank 7 demon beast, Black Bull Essence