Traditionally in Chinese society, raising children to get support in old age had been the social norm and ethical value which people complied. Family took the main responsibility for taking care of older parents, and it was only when family could not afford to do so would society provide help. In a society where agriculture was the basis of economy, individuals would continue to work in the field as long as they could so as to earn a living, which is to say, in most cases, people would not stop working because of reaching a certain age, not to mention retirement.
Cao, T. (2014). Asia-Pacific panaroma: Development of pension in China from a historical perspective. Asia Pacific Institute of Ageing Studies Newsletter, 5, 15-16. Retrieved from http://commons.ln.edu.hk/apias_nlj/vol5/iss1/20/