What does it mean to get rich?

It means that the family is prosperous and more people can create more achievements and wealth.

Adding a fortune means that the family business is prosperous. In ancient times, Tianding meant to increase population, which meant to have a son. When the whole sentence is put together, it means having a son, increasing the population and making a fortune, which is very beautiful. Nowadays, Tian Dingfa often appears on couplets, and many adults will stick couplets on the doors of children's rooms.