Bluish-white-glazed Mangkou bowl with flowers and double phoenix patterns of Song Dynasty

It is 6 cm in height, 18.7 cm in diameter, 6.3 cm in foot diameter and 0.21 kg in weight. The bowl has an open mouth, slanted wall and short ring feet. The inner wall of the bowl is printed with a circle of palindromes and double phoenix patterns. The bowl core is decorated with lotus petal pattern. The whole body is covered with bluish-white glaze.