Age-old problem looms for families
The 4-2-1 structure poses challenges to providing care for the elderly. Duan Yan in Beijing reports.
After another national holiday spent squeezing onto cramped trains to visit relatives, Li Wenbo and his wife Jia Xuan had the luxury of leaving their 2-year-old daughter with Li's parents this week.
Like many modern couples, being able to get some respite from the daily pressures of parenthood is the best thing about the so-called 4-2-1 family.
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