This is a bottle used to contain liquid such as water, liquor, oil, vinegar, and soy sauce, and varies in shape and size according to the era. There are many types of bottles, for example, those with a long or short neck, those with a mouth, those with a handle, etc. Each type can also vary depending on the material and usage of the bottle. Early versions of this bottle resembled a bowl. As time went on, however, the mouth became narrower and the neck became longer, forming its current shape. Subsequently, a focus on practicality led to a greater diversity of shapes, and clearer distinction of usage based on the shape. For example, the material used to produce the bottles also determined the type of liquor to be contained within. The long neck served as a handle, while the lip prevents liquor or water from spilling after being poured. Various materials are used to make these bottles, such as clay, wood, glass, bones, and skins. However, following the development earthenware culture, celadon and white porcelains were mainly used, and this trend remains to the present day. There is an idiom that says someone has become “bottle-mouthed,” which refers to a person who frequently expresses dissatisfaction.