中国的城乡收入差异，改开初期大约是2倍，2008前达到顶峰，2010后大概是3.5倍。
Piketty, Thomas, Li Yang, and Gabriel Zucman. 2019. "Capital Accumulation, Private Property, and Rising Inequality in China, 1978–2015." American Economic Review 109 (7): 2469–96. DOI: 10.1257/aer.20170973