RT Journal T1 Delaying Retirement, the Burden of Working Population, Subjective Wellbeing A1 YANG Hua-lei, WU Yuan-yang, SHEN Ying-xi, SHEN Zheng PB Journal of Guizhou University of Finance and Economics FD 2020-07-15 YR 2020 JF Journal of Guizhou University of Finance and Economics JO Journal of Guizhou University of Finance and Economics VO 38 IS 04 SP 69 DO K1 delayed retirement;labor population welfare;dynamic optimization;defined benefits;defined contribution LK {https://gcxb.gufe.edu.cn/EN/article/article_9223.shtml}