History of question #688968
| When | Who | Action | New State |
|---|---|---|---|
| Bruno Chareyre | Comment | Open | |
| Xu Mengqian | Give more information | Open | |
| Chareyre | Answer | Answered | |
| Jan Stránský | Request for more information | Answered | |
| Xu Mengqian | Comment | Answered | |
| Xu Mengqian | Comment | Answered | |
| Jan Stránský | Answer | Answered | |
| Xu Mengqian | Comment | Answered | |
| Chareyre | Answer | Answered | |
| Jan Stránský | Answer | Answered |
