Credits Policy
| Prestige | Gold | Contribution | Wisdom | |
| Post New Thread | - | - | - | - |
| Post Reply | - | - | - | - |
| Add to Digest | +10 | - | - | - |
| Upload Attachments | - | - | - | - |
| Download Attachments | - | - | - | - |
| Private Message | - | - | - | - |
| Search | - | - | - | - |
| Visit Promotion | - | - | - | - |
| Register Promotion | - | - | - | - |
| Trade succeed | - | - | - | - |
| Vote the Poll | - | - | - | - |
| Credits Lower limit | 0 | 0 | 0 | 0 |
Credits Lower limit: You are unable to perform the action which charges the credit when your balance of specified credits is lower than lower limit
Total credit Formula: Total credits=Posts*1.0+The Digest Posts*20+Prestige*2+Contribution+Wisdom
| User Level | Credit Start | Read Permission | Action | |
| Pre-school | -999999999 | 0 | Group Detail | |
| Elementary school |  |
0 | 10 | Group Detail |
| Junior high school |  |
50 | 20 | Group Detail |
| High school | |
200 | 30 | Group Detail |
| Junior college |  |
500 | 40 | Group Detail |
| Undergraduate | |
1000 | 50 | Group Detail |
| Master | |
3000 | 60 | Group Detail |
| Ph.D. | |
5000 | 70 | Group Detail |
| Post-doctoral | |
8000 | 80 | Group Detail |
| Associate Professor | |
15000 | 90 | Group Detail |
| Professor | |
25000 | 100 | Group Detail |
| Academician | |
30000 | 110 | Group Detail |
| Lifetime Academician | |
35000 | 120 | Group Detail |
| Nobelist | |
50000 | 130 | Group Detail |