| Characteristics | Total population (n = 50) |
| Female/male (n) | 25/25 |
| Age categories in years (n) |
|
| 20 - 30 | 27 |
| 31 - 40 | 11 |
| 41 - 50 | 9 |
| 51 - 60 | 2 |
| >60 | 1 |
| Occupations |
|
| Faculty | 26 |
| Staff | 3 |
| Student | 20 |
| Others | 1 |
| Regions |
|
| Guangxi | 28 |
| Henan | 5 |
| Hubei | 3 |
| Taiwan | 3 |
| Hunan | 2 |
| Shandong | 2 |
| Liaoning | 2 |
| Guangdong | 1 |
| Shanghai | 1 |
| Sichuan | 1 |
| Ningxia | 1 |
| Yunnan | 1 |