Trading Rules

After sending his parents away, Xia Ming accidentally cut his finger and dripped blood on an ancient coin while cleaning up the old house. After he obtained the rules of trading, what would happen to him when beings from all over the world asked him to trade? "I'm just an ordinary businessman"——————A message from the president of a certain Wanjie Chamber of Commerce ps. This chamber of commerce has everything, fair trade, and supports barter. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.