Yang Yinli, like millions of migrant workers in China, sent her first son to live with his grandparents in the countryside. It was a choice she would bitterly regret.
No one was watching the lively six-year-old when he was struck and killed by a truck roaring through the steep village roads. Heartbroken, Ms Yang bore a second son and vowed to raise him in Beijing, stuffing a crib into her tiny shop and keeping a close eye as the toddler played on the pavements.
But new regulations announced this year may force her to send her son, now five, away to be educated. The regulations, which in effect prevent migrant children from entering the first year at Beijing schools, triggered weeks of protests this spring by crowds of anguished parents.