Ye Kong said with a smile, "it's said that there is a black dragon city in the depth of the flood land. There are tens of thousands of monsters living in it. They are all monsters during the transformation period. The materials of the monsters are extremely cheap there, and the cheap goods here are very precious there. So everyone said that as long as we find the black dragon city and sell some goods, we will never have to worry about food and drink."

Cao Muse said in surprise, "is there anything else like this?"

Cao Junfeng shook his head and said, "it's impossible. Tens of thousands of monsters...