From the Song Dynasty, this black glazed flask features beautiful and smooth lines. The open mouth gradually converges to the neck. The body cleverly extends outwards from one-third of the body, and then converges from the mid-abdominal to the bottom as if made in one stroke. The rim that runs along the mouth echoes the features of the bottom, making the flask appear even more stunning and elegant. In particular, the glossy black color faintly exudes a mysterious atmosphere. Besides some slight mottles at the bottom, there are no other blemishes.