| Classification of social capital | Variable | Definition |
| Integrated social capital | tie1 | The total number of relatives and friends visit in Chinese New Year |
| tie2 | The number of relatives and friends from home visit in Chinese New Year | |
| tie3 | The number of relatives living in the city visit in Chinese New Year | |
| tie4 | The number of friends living in the city visit in Chinese New Year | |
| tie5 | The total number of relatives and friends that had given help | |
| Bridged social capital | tie6 | Whether have relatives or classmates in Guangzhou |
| tie7 | The number of friends made after coming to Guangzhou |