Durian doesn't open its mouth. It will open its mouth automatically after a few days. The opening time of durian is related to the maturity of durian itself. The lower the maturity of durian, the longer it will be placed. The higher the maturity of durian, the shorter it will be placed. Generally, durian without opening will open in about 1 to 7 days. Will durian open automatically if it doesn't open for a few days? Durian without opening is not fully mature durian.
Durian has a strong smell after ripening. If you smell a smell of alcohol, it proves that durian is mature.
Durian with natural cracks after ripening is easy to breed by bacteria, and can not be stored for too long. （LiuLianMeiKaiKouFangJiTianHuiZiDongKaiKouMa）