What is the largest size of a group fan

The round fan, also called "palace fan", "dandy fan". It is a round fan with a handle. Before the Song Dynasty, fans were referred to as fans. Wang Changling "long letter worry" poem: "broom Pingming autumn hall open, and will fan *** wandering". The staff fan new record ": the recent general plain silk, two sides of the taut, or clay gold, porcelain green, lake color, there is the moon, waist round, hexagonal style, all Sin celebrities painting and calligraphy, handle with the plum brand, Xiangfei, brown bamboo, there are also lacquer, ivory and so on. The name is "group fan". Round or nearly round fan, fan handle is not long. The fan is a Chinese invention, also known as the fan, and later introduced to Japan. Folding fan is a Japanese invention, and then introduced to China.