Inspired by Pi day, Orion China initiated Pieday(Mar. 14), the day of celebrating frienship, with the meaning that friendship lasts as infinite as π. Pieday Online Campaign was launched On Mar. 1. It aimed at encouraging people to express friendship by giving pie. A Pieday event minisite was built on the biggest microblog platform in China. Users could get lucky draw opportunities by sending electronic friendship cards to followers, At the end of campaign on Mar 20, the event attracted huge number of people to participate . And Orion pie sales also soared up.