In addition, the observation on migrant workers’ wage is strongly selective as migrant workers would return to their hometown once they can’t make enough earnings in urban labour markets. Figure 3.4 presents the mean of earnings by deciles for both local workers and migrant workers. For low- and middle-income groups, migrant workers have higher earnings than locals, while in high-income groups they earn lower incomes. On average, the monthly income is CNY 811 for local workers and CNY 828 for migrant workers, and the two medians are CNY 624 and CNY 718, respectively.