From Financial Times:
Yang Zhili was not confronted by family planning officials in the southern Chinese city of Shenzhen, his home for the past 20 years, when his wife gave birth to a second son in violation of the country’s one-child policy.
The migrant entrepreneur instead paid a Rmb5,000 ($735) fine in his home province of Sichuan, more than 1,000km inland.
“We had to register his birth and pay the fine in our hometown,” said Mr Yang, who runs a small Sichuan restaurant.
“Otherwise he would not be able to apply for an identity card [on his 16th birthday].” When that day comes, his son’s identity card will also be issued in Sichuan.