Bluish-white glazed bowl of Southern Song Dynasty with engraved pattern of children at play (75)

It is 7.7 cm in height, 20 cm in diameter, 6 cm in foot diameter and 0.31 kg in weight. The bowl is in the shape of a hat with an open mouth, oblique wall, and short ring feet. The inside wall of the bowl is decorated with engraved patterns of children at play, and the whole body is covered in bluish-white glaze.