What are the difference between Beijing opera masks and Halloween masks?

John, Halloween masks are used to scare away ghosts. So monsters and other scary figures are used as the mask signs. However, Peking Opera masks are totally different. They are used to embody the characteristics of the role played by the actors and actresses. Today, many of the masks represent famous historical figures, such as Cao Cao, Zhang Fei and Guan Yu during the Three Kingdoms' Period (220 - 280).