What are ten snails and ten dustpans?

It means perfection in Chaoshan ballads.

Chaoshan nursery rhymes are like this: one snail sits and sticks, two snails go, three snails have rice to cook, four snails have rice to cook, five snails have five fields to be strong, six snails are sad (meaning worry), seven snails have seven postal services (helping everything), eight snails beg for food, nine snails are safe, and ten snails go to be officials. Folk songs come from life experience, and the "ten snails" in Chaoshan folk songs are ten buckets and ten dustpans, which is the perfect combination of great happiness and great wealth.

Finger snail refers to the fingerprint on the finger spinning into a regular circle. A dustpan refers to an irregular pattern on your finger. The number of finger snails varies from person to person, which is the result of free combination of genes. The fingerprint of "snail" is roughly round, like a concentric circle. The "dustpan pattern" is roughly an external opening, such as a grain of water.