How did a mother of three babies come up with an online name?

The online names are as follows:

Nuan Nuan’s mother, mother of three treasures, home of triplets, mother of two children and three children, following in the footsteps of three children, three A mother with one child, three mythical beasts, three auspicious treasures, a mother of three babies, three babies, three little bears, a happy mother, etc.