What you want to ask is, is it normal to have air in the VV soy milk powder sachet? normal. According to a query on Weiwei's official website, this is because a certain amount of nitrogen or other inert gases are injected into the soy milk powder bag during the packaging process. The purpose is to protect the product and prevent the oxygen in the soy milk powder bag from oxidizing the soy milk powder and causing deterioration. By injecting inert gas into the bag, it can help maintain product freshness and protect the taste and aroma of soy milk powder. This air filling inside the bag also helps prevent the bag from being squeezed and deformed during handling and transportation.