It's credible, because the money you paid in advance didn't go to him, and you paid it twice before the money belongs to him. You can look at the goods first and then talk about it. Our store deals in medicinal materials in Taobao, and I guarantee that the medicinal materials are absolutely good, but they can be returned if they are not good. At the same time, I can go to the drugstore to see if my medicine is better than theirs. I want that kind.