This is a Southern Song Dynasty Longquan kiln green glaze hat-style bowl. Longquan kiln from China, fired during the Southern Song Dynasty (1127-1279). Longquan kiln was a famous celadon producing area in the Song Dynasty, which reached its historical peak in the Southern Song Dynasty. The device is in the shape of a hat, the mouth is skimming outward, the circle is small, and the shape is elegant and generous. There is a fine green glaze, glaze color presents elegant turquoise, "like ice like jade" reputation, in line with the Song Dynasty introverted rational advanced aesthetic. There is an obvious damage along the bowl mouth, which has been repaired using the traditional Japanese gold (Kintsugi) process.