it's about 21 yuan at most. Actually, you don't want the small shop to have the invoice. If she doesn't give you the invoice, you can call the local tax to report the fine. It is recommended that large and medium-sized hotels make the invoice and go directly to the bar. It's best to talk about it when the bar is alone. As long as it's not the new bar, there will be a surplus invoice, which means they can pocket the money they sell you.