In ancient China, moon worship was tied closely to fertility and the harvest. So the full moon that happened closest to the fall equinox became the holiday now called Mid-Autumn Festival, also called Moon Festival by some. Originally a celebration of the harvest and a plea to the gods for rains to ensure a good harvest next year, the festival has become a more secular bit of autumn fun, with children and adults alike eating sweet mooncakes, lighting lanterns, and giving thanks for all they have. Really, they had us at ‘mooncake.’