Table 1.
Preprocessing of control variables
| Variables | Processing | ||
|---|---|---|---|
| Panal A: City level | |||
| Lnpgdp | Logarithm of GDP per capita | ||
| Unemployment | Unemployment rate | ||
| Undergraduate | Number of college students per 10,000 people | ||
| Pop | City population at the end of the year | ||
| Perroad | Road area per capita | ||
| Rubbish | The decontamination rate of urban refuse | ||
| Migrate | 1-East to east | ||
| 2-Mid-west to east | |||
| 3-East to mid-west | |||
| 4-Mid-west to mid-west | |||
| Panal B: Individual level | |||
| Education | 1-Primary and below | Status | 1-Employee |
| 2-Junior school | 2-Employer | ||
| 3-Senior school | 3-Self-employment | ||
| 4-college and above | 4-Others | ||
| Marriage | 0-Unmarried | Income | 1-Less than 4200 |
| 1-Married | 2–4200-6000 | ||
| Family | 1-Single | 3–6000-9000 | |
| 2-Spouse | 4–9000 and above | ||
| 3-Child | House | 1-Free housing | |
| 4-Parents | 2-Tenement | ||
| 4-Others | 3-Self-buying | ||
| Hukou | 0-Urban | Medical insurance | 0-No |
| 1-Rural | 1-Yes | ||
| Range | 0-Inter-provincial | Social security card | 0-No |
| 1-Intra-provincial | 1-Yes | ||
| Duration | Duration of this migration | ||