Red wine can be drunk in a month. But it depends on the preservation conditions. If there is no odor or other bad sensory traits, it can still be drunk, but the taste of the wine should be gone. It is usually stuffed with a vacuum plug and then stuffed into the refrigerator. I can still drink it in a few days, but it certainly doesn't taste as good as the first time. If you want to keep the bottle for a period of time after opening it, it is best not to put it in the air and keep it at a low temperature and constant temperature.