| Value | Category | 
|---|---|
| 1 | work in same county (agriculture) | 
| 2 | work in same county (non-agriculture) | 
| 3 | work outside county (agriculture) | 
| 4 | work outside county (non-agriculture) | 
| 5 | study in same county | 
| 6 | study outside county | 
| 7 | live outside | 
| 8 | other, specify | 
| Sysmiss |