Satellite Babies
en.wikipedia.org
en.wikipedia.org
¹ A lesson you learn very fast is to never joke while at immigration or customs.
Like, I wouldn't do that personally, but as an immigrant I totally get why people would send their kids to live with their grandparents until they are of school age.
Where I live the cost is dependent on the parents' income, and where I come from it's a fixed cost that is low enough for most people to be able to afford it. Even if they lived in my country, I don't think I would call my parents to take care of my children very often.
[1] https://en.wikipedia.org/wiki/Left-behind_children_in_China
"Satellite babies (also called Satellite Children) refer to immigrants’ children who are temporarily sent back to their home country by their parents to be reared by extended family."
These kids are being raised by their extended family.
" Typically, the satellite babies are born in the host country and sent back as infants, returning to their parents in time to start schooling or when their parents have established financial stability."
Then they reunite.
In other words, nothing like giving your children to an orphanage.