The South China Morning Post has the story: blood samples for gender tests apparently are a leading indicator of abortion of female fetuses:
Chinese blood mule, 12, caught trying to smuggle 142 samples into Hong Kong for sex testing
"Youngster apprehended at Shenzhen port with more than 1.4 litres of blood from expectant mothers in her backpack
Samples had papers requesting DNA tests to show if fetuses were male or female"
Chinese blood mule, 12, caught trying to smuggle 142 samples into Hong Kong for sex testing
"Youngster apprehended at Shenzhen port with more than 1.4 litres of blood from expectant mothers in her backpack
Samples had papers requesting DNA tests to show if fetuses were male or female"