Wu said she wanted Marco to have the experience of living abroad, which was a key factor in her decision.
"I was really interested to see what my son could do in a totally foreign environment, to test his independence and interdependence, and to learn to trust him being on his own," she said.
The children had to travel two metro stops between the training center and their living quarters every day, which Wu said was her biggest concern.
"I worried about what would happen if they got separated from the coach and got lost on the way to training," she said.
Wu said the experience was as educational for parents as it was for the children: "I have discovered the strength and potential of my kid, and have learned to stay calm and allow him to solve problems by himself."
She hopes Marco will be able to attend an international basketball camp in China.
Globalization should not just mean us traveling abroad, but also others coming to China," she said.