Aug 15 by lunar calendar is China's traditional Mid-Autumn Festival or simply Moon Festival, featuring customs like family reunion, enjoying the full moon, and eating moon cakes. But it also has unrelenting side effects in Sanya China, an island city renowned for its beautiful and clean beaches, where local residents and many tourists gather and pray for happiness at the night of Moon Festival. What a romantic and poetic night! However, it's also costly in terms of sanitation. Tons of garbage messed up the beaches of Sanya city.