Legend has it that pearls are tears of the sea. A long time ago, there was a kind of mermaids outside the South China Sea. They looked like humans, but they lived in the sea. When the sharks cry in sorrow, the tears that roll down are beautiful pearls, and whether the pearls are round or not is related to the waxing and waning of the moon. On the night of the full moon, when the sharks cry, the pearls that roll down are especially round, and when the moon is missing a corner, the pearls also have strange shapes. The story begins here.............