First of all, ask 2581 whether you are going to learn soybean milk or other things. If they just teach you soybean milk without making it clear to you, it's a lie. If you learn other things, they give you soybean milk for free. That's your problem. If you spend 1,111 yuan on clothes and others give you a pair of socks, do you think a pair of socks can be worth 1,111 yuan? I doubt your purpose.