A) Parenting. You will mostly have no parenting on your own in China. Tech companies will make you work long hours. It is not uncommon that when you finished work and back home, your kid is already asleep. When you leave home early to catch the train, your kid is still asleep. It is not a joke but many Chinese young couples only see their kids during weekend, even they live together. You think leaving your kid to your parents 5 days per week is good? Noooooooooo
B) Medicare. Every time your kid gets fever: IV. Your parents just love it. They think it is the best. Chinese people love to have their kids get blood test, X-ray for just cough... Children's hospitals are crowded by (grand)parents and kids who simply have cold (see pictures and story http://www.sohu.com/a/212568582_407108). Most Chinese people (including educated middle class) do not understand get cold is not because of cold, it is because of virus.
C) Also everybody knows: the highly competitive education system is a huge burden on kids and parents. It is common to spend lots of money to purchase apartment at good school district (xue qu fang). And many parents do this for kids going to elementary school, middle school, high school... Middle class life is not easy.