What is "weiya"

Weiya is a traditional annual celebration for Tu Di Gong (the earth god, also known as Fude Zhengshen , the god of wealth and merit) on the 16th of the 12th lunar month in Chinese society, especially in Taiwan. Weiya is the last of the bimonthly Ya festivals honoring the earth god in the Chinese lunar calendar. In Taiwan, Weiya is also an occasion for employers to treat their employees to a banquet to thank them for their hard work throughout the year.