2. For bottled water, it does produce bacteria after opening, but it doesn't mean that it can't be drunk. Bacteria, a special thing, can be divided into beneficial bacteria, harmful bacteria and neutral bacteria; For bottled water, as long as it is clean and hygienic, it is actually no problem to drink it in daily life; In other words, only in extreme cases such as epidemic situation will some pathogenic bacteria invade Kaifeng bottled water, and there is no problem in other cases.