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We have the QingMing festival which falls in the first week of April.

Chinese families visit the tombs of their ancestors to clean the gravesites, pray to their ancestors and make ritual offerings. Offerings would typically include traditional food dishes and the burning of joss sticks and joss paper. The holiday recognizes the traditional reverence of one's ancestors in Chinese culture.

But, that will soon be a thing of the past. There won't be any cemeteries left. It would all be columbariums.