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Bells are considered luck items in Chinese traditions. Bells are rang 108 times to begin a grand celebration. The digits are derived from the idea of 12 months, 24 solar terms and 72 hou (5 days a hou) on the Chinese lunar calendar which means 108 worries will be removed from the people. It can be compared in the 40 days mourning period of the family with a dead family member which means that only after 40 days will the dead realize the he/she is dead. 
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