Some netizens have been discussing that they have caused discomfort because they bought pre-opened coconuts and drank the coconut water inside. Coconut water is carbohydrate-contained, and in an unsafe temperature environment, it can breed a variety of pathogenic bacteria.
It is best to consume it on the same day as eating coconut meat, so it can be stored at room temperature for a long time before opening. Refrigerate immediately after opening, and if it is refrigerated, it is safer to ask the stall owner to open it at that time.