On a rainy day, the bag sent by my friend got wet. After I dried it, there were water stains on it. How to get rid of it? Solve it.

I had a scarecrow bag last time, and the situation was similar to yours. If the bag is just wet, dry it with a paper towel or a dry cloth, and then put it in the shade to dry, so that there will be no water stains. If there are water stains, it will be very difficult to remove them. Basically, there is no choice but to take them to a professional nursing shop, so you don't know whether your bag is high-grade or low-grade Where are you from? You can go to some local leather care shops to have it repaired.