负盈利套利打法简介：Liu Lei took out two bags of steamed buns and fried dough sticks from his schoolbag, still steaming with steam, threw a bag of steamed buns to Su Can, and said: "Look at me, I bought them specially at the Dumpling King Restaurant."
Liu Lei took out two bags of steamed buns and fried dough sticks from his schoolbag, still steaming with steam, threw a bag of steamed buns to Su Can, and said: "Look at me, I bought them specially at the Dumpling King Restaurant."
