Happy ending: the snail girl and the farmer lived happily ever after, and a year later gave birth to a fat boy, turning 5 or 6 years old. One day, he was playing with water and frolicking by the river, and was later scolded by his fellow children for being the child of the field-snail spirit.
"Stack, stack, stack, which a mother field snail shell, ting, ting, ting, which a mother field snail spirit." His son listened to what people said and hid his mother's shell, and the field snail girl could never change back into a field snail.