The Cheung Chau Bun Festival is considered one of the most famous traditional events in Hong Kong. Such celebrations include a spectacular procession in which children are dressed as mythological figures in a prarade. The parade has its finale at a temple where tall towers adorned with sweet buns have been erected. While the event has been restored on 2005, Hong Kong Tourism Board try to seek for new media to introduce such special event to foreigner. We produced an free iPhone app. packaged with a brief video introduction and 2 interesting games: Photo Fun and Bun Stamping Fun. Such promotion lets audience to get involved into these two characteristic events in order to have a better impression on the festival.