| Distribution area of the sample village | Sample county | Overall sample | |
| Number of villages | Percentage rate | ||
| West Anhui | Huoqiu County | 30 | 11% |
| Jinzhai County | 24 | 8% | |
| Middle Anhui | Feixi County | 27 | 10% |
| Changfeng County | 28 | 10% | |
| North Anhui | Shou County | 21 | 7% |
| Xiao County | 20 | 7% | |
| Southwest Anhui | Huai Ning County | 50 | 18% |
| Zongyang County | 42 | 15% | |
| South Anhui | Guangde County | 23 | 8% |
| Xuanzhou District | 19 | 7% | |
| Total | 284 | 100 | |