Brazilian Mother and Chinese Father have Child together in Brazil. They all live in Brazil.
Until Mother dies when Child is about 4 years old. Then Father takes Child with him back to China.
Then Father dies. Child’s Chinese uncle takes him in.
A year or two later, Child’s Grandmother in Brazil sues for custody of Child. Grandmother wins.
Child goes back to Brazil with elderly Grandmother in 2004. And now Grandmother dies.
And now the Brazilian child welfare agency has placed Child into foster care, presumably because he has no other living relatives in Brazil.
But he still has living relatives in China. They are considering seeking custody of Child again.