The use of fans as props in various forms of singing and dancing has a long history. "Song fan" in Tang and Song dynasties has become a common term in poetry and prose. Dramatists, regardless of gender, must insert a fan around their waist; Fans have become indispensable props in Yuan Dynasty dramas. It is customary for female characters to use small painted fans, ministers, scholars, and leisure officials to use medium sized fans, while military officials, such as those with large faces and black heads, use large white bamboo bone fans, some as long as two feet. Actors use fans to express the different identities and psychological states of their characters, which are infinitely useful. Dramas and literary works also have fans as their theme, such as "Peach Blossom Fans", "Sun Wukong Borrows the Banana Fan Three Times", and "Qingwen Tears the Fan", which shows their great influence.