First, go to the manufacturer or seller to contact the source of goods, then contact the supermarket, sell your wine and start to sell it on a commission basis. I'll call you when it's sold well and open the market bit by bit. When my family first started to do it, it only sold a few boxes a day, which was only two or three months, and the market was completely opened. Of course, competition exists. Patience is also necessary. It depends on what you do.