The appearance depends on the color. If the color of sea cucumber is dark, it means that domestic farms have processed it many times. If the color is light, it means it is wild.
Then look at the weight. What you want to process must be mixed with something, so the sugar is heavy when it dries. Buy it and soak it in water, and you will know that it is mixed with sugar.
If you don't understand, you can ask me again ~ I hope to adopt it ~