C2414 Exchange with Immortal Crystals

After Yan Shan asked Luo Hongying about it, Luo Hongying was in a difficult situation. After thinking for a while, Luo Hongying decided to ask Tang Ao. They wanted to see what kind of treasure Tang Ao was trading for, because this scarlet-gold knife was refined by Tang Ao. Previously, Tang Ao had entrusted all his power to the Immortal Ruins Auction to auction